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List of Freshwater Fishes reported from Cambodia
n = 492
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Table 1: 474 species currently present in the country/island (endemic, native, introduced, reintroduced);
Table 2: 13 species possibly present in the country/island (stray, questionable);
Table 3: 5 species demonstrated to be absent in the country/island (extirpated, not established, misidentification, error).
Table 4: 492 species reported from the country/island altogether.
Table 1: 474 species currently present in the country/island.
     
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Family Species Author Info Occurrence Common names Abundance Max length Maturity Remark Photo
Cyprinidae Aaptosyax grypus Rainboth, 1991 Fr native  scarce (very unlikely) 130 cm SL male/unsexed  Known from the middle Mekong. It is now extremely rare and should receive special listing by the IUCN (Ref. 12693). Also Ref. 37770. 
Cobitidae Acanthopsoides delphax Siebert, 1991 Fr native   6.00 cm SL male/unsexed  Found in the Mekong River. 
Cobitidae Acanthopsoides gracilis Fowler, 1934 Fr native   5.40 cm SL male/unsexed  Found in Stung Santréa, Stung Chihreng, O Po Kampon and Siem Reap (Ref. 36654).  No picture yet.
Cobitidae Acanthopsoides hapalias Siebert, 1991 Fr native   6.00 cm TL male/unsexed  Occurs in the lower Mekong River. Also Ref. 27732, 26580, 43281. 
Cobitidae Acantopsis dialuzona Van Hasselt, 1823 Fr native  Trey ruschék (Khmer)  25.00 cm SL male/unsexed  Known from Tonlé Sap, Stung Sang, Stung Chihreng, Kompong Cham, Mae Khong at Kompong Reat (Ref. 36654). Also Ref. 7050, 26580. 
Cobitidae Acantopsis dinema Boyd & Page, 2017 Fr native   11.67 cm SL male/unsexed  Known from the tributaries of the Mekong River draining the Khorat Plateau and Mekong Delta ecoregions and from Prek Thnot River south of Phnom Penh (Ref. 116755).  No picture yet.
Cobitidae Acantopsis ioa Boyd & Page, 2017 Fr native   13.20 cm SL male/unsexed  Known from Srepok River, a large tributary of the Mekong (Ref. 116755).  No picture yet.
Cobitidae Acantopsis rungthipae Boyd, Nithirojpakdee & Page, 2017 Fr native   11.97 cm SL male/unsexed  Known from Mekong River basin (Ref. 116755).  No picture yet.
Gobiidae Acentrogobius caninus (Valenciennes, 1837) Fr, Br native   18.30 cm TL male/unsexed  Found in the Mekong delta. 
Gobiidae Acentrogobius chlorostigmatoides (Bleeker, 1849) Fr, Br native   12.40 cm TL male/unsexed  Found in the Mekong delta and may be found as far upstream as the tidal zone in Cambodia. Not seen in markets (Ref. 12693). 
Soleidae Achiroides leucorhynchos Bleeker, 1851 Fr native  Trey andat chhke (Khmer)  8.00 cm SL male/unsexed  Known from the Mekong basin. 
Soleidae Achiroides melanorhynchus (Bleeker, 1850) Fr native  Trey andat chhke (Khmer)  14.00 cm SL male/unsexed  Occurs in the Mekong basin. 
Akysidae Akysis clinatus Ng & Rainboth, 2005 Fr native   3.30 cm SL male/unsexed  Known from Stung Chhay river on the western slope of the Chaine des Cardamones in southwest Cambodia and draining westwards to the Gulf of Thailand (Ref. 56231).  No picture yet.
Akysidae Akysis ephippifer Ng & Kottelat, 1998 Fr native   3.36 cm SL male/unsexed  Known from the lower Mekong basin. Also Ref. 43281, 52824. 
Akysidae Akysis fuliginatus Ng & Rainboth, 2005 Fr native   2.15 cm SL male/unsexed  Known from the Mekong River (Ref. 56231).  No picture yet.
Akysidae Akysis maculipinnis Fowler, 1934 Fr native   3.13 cm SL male/unsexed  Known from the Mekong basin. 
Akysidae Akysis varius Ng & Kottelat, 1998 Fr native   4.00 cm SL male/unsexed  Known from the Siem Reap river of the Mekong basin in northwestern Cambodia. 
Cyprinidae Albulichthys albuloides (Bleeker, 1855) Fr, Br, Fi native  Chhkok tituy (Khmer), Trey chhkok tituy (Khmer), Trey Chkok Tituy (Khmer), Trey real (Khmer), Trey Riel (Khmer)  30.00 cm SL male/unsexed  Known from the Mekong basin (Ref. 12693). Found around the Tonle Sap river, Great Lake (mostly adults) (Ref. 36686, 36651), Stung Chihreng and Phom Penh (Ref. 36654). Adults are sold fresh around the Grea Lake or are cleaned and sliced in half by a single sagittal cut in preparation for salting and drying (Ref. 12693). Also Ref. 2091, 7050, 33813. 
Ambassidae Ambassis gymnocephalus (Lacepède, 1802) Fr, Br native   16.00 cm TL male/unsexed  Knonw from the Mekong delta. 
Botiidae Ambastaia sidthimunki (Klausewitz, 1959) Fr native   5.50 cm SL male/unsexed  Found in the Mekong River (Ref. 12693). 
Amblycipitidae Amblyceps foratum Ng & Kottelat, 2000 Fr native   8.51 cm SL male/unsexed   
Amblycipitidae Amblyceps mangois (Hamilton, 1822) Fr native   12.50 cm SL male/unsexed  Found in shallow, fast flowing channel of the Mekong upstream from Stung Treng (Ref. 12693) and Cardamones (Ref. 36654). 
Amblycipitidae Amblyceps serratum Ng & Kottelat, 2000 Fr native   4.53 cm SL male/unsexed  Known from the Mekong River drainage. Type locality, 14 km NE of Stung Treng, shallow channel across S end of Kaoh Han, Stung Treng Prov. (Ref. 37785).  No picture yet.
Danionidae Amblypharyngodon chulabhornae Vidthayanon & Kottelat, 1990 Fr native   4.00 cm SL male/unsexed  Known from the Mekong River. Also Ref. 26580, 43281. 
Cyprinidae Amblyrhynchichthys micracanthus Ng & Kottelat, 2004 Fr native   19.67 cm SL male/unsexed   
Cyprinidae Amblyrhynchichthys truncatus (Bleeker, 1850) Fr native  Kambut chramos (Khmer), Kambot chramos (Khmer), Kamput chramos (Khmer), Trey kambot chramos (Khmer), Trey Kombot Chrâmos (Khmer), Trey pruol thmår (Khmer), Trey real (Khmer), Trey riel (Khmer) scarce (very unlikely) 40.00 cm SL male/unsexed  Recorded from the Mekong (Ref. 26580, 7050, 43281). Found around the Tonle Sap river, Great Lake (Ref. 36651), Sékong at Stung Treng and Phnom Penh (Ref. 36654). Also Ref. 33813. 
Anabantidae Anabas testudineus (Bloch, 1792) Fr native  Kranh (Khmer), Trey kranh (Khmer), Trey kranh srai (Khmer)  25.00 cm TL male/unsexed  Occurs in the Mekong basin (Ref. 27732). Found around the Tonle Sap Great Lake and river (Ref. 36651). Known from Réam, Stung Sen, Angkor (Ref. 36654) and Sangke river, Battambang province (Ref. 41486). Occurs in sluggish or still standing waters (Ref. 36686). Also Ref. 3902, 33813, 36662, 41236, 45353. 
Cyprinidae Anematichthys repasson (Bleeker, 1853) Fr native  Trey srawka kdam (Khmer), Trey Sraka Kdam (Khmer), Trey sraka kolam (Khmer)  28.00 cm SL male/unsexed  Occurs in the Mekong River (Ref. 27732). Found in Battembang, Tonlé Sap, Srépok and Siem Reap (Ref. 36654). Also Ref. 2091. 
Anguillidae Anguilla bicolor McClelland, 1844 Fr, Br, M native  Trey chlok (Khmer) scarce (very unlikely) 123 cm TL male/unsexed  Rare in Mekong (Ref. 12693). Also Ref. 3902. 
Anguillidae Anguilla japonica Temminck & Schlegel, 1846 Fr introduced   150 cm TL male/unsexed   
Anguillidae Anguilla marmorata Quoy & Gaimard, 1824 Fr, Br, M native  Antong Tunleir (Khmer) common (usually seen) 70.00 cm TL male/unsexed ;200 cm TL female  Found in the Mekong basin. Occurs in the Great lake when water levels are exceptionally high (Ref. 12693). Also Ref. 43281. 
Gastromyzontidae Annamia normani (Hora, 1931) Fr native   7.80 cm SL male/unsexed  Known from the Mekong basin. Also Ref. 27732, 26580. 
Dorosomatidae Anodontostoma chacunda (Hamilton, 1822) Fr, Br, M native  Trey ka moi (Khmer)  22.00 cm SL male/unsexed  Usually found in marine coastal waters, but ascends rivers to the upper tidal zone and may be found in Cambodia near Viet Nam border (Ref. 12693). Also Ref. 31154. 
Aplocheilidae Aplocheilus panchax (Hamilton, 1822) Fr, Br native  Trey changwa ronoung (Khmer)  9.00 cm TL male/unsexed  Occurs in the Mekong River (Ref. 12693). Found in Kampot and Réam (Ref. 36654). . 
Oxudercidae Apocryptodon madurensis (Bleeker, 1849) Fr, Br native   9.00 cm TL male/unsexed  Found in the Mekong basin. 
Tetraodontidae Auriglobus nefastus (Roberts, 1982) Fr native  Trey kampot (Khmer), Trey krepot (Khmer)  13.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 12693, 43281). Known from Kompong Cham and Tonlé Sap (Ref. 36654). 
Gobiidae Awaous grammepomus (Bleeker, 1849) Fr native   15.00 cm SL male/unsexed  Likely to occur in the Cambodian Mekong. 
Sisoridae Bagarius lica Volz, 1903 Fr native  Trey krawbey (Khmer)  200 cm SL male/unsexed  Known from the Mekong basin. Below the Khone Falls in Kratie and Stung Treng, it migrates upstream between October and February and downstream from April to September (Ref. 37770). Also Ref. 2091, 27732. 
Sisoridae Bagarius vegrandis Ng & Kottelat, 2021 Fr native   22.00 cm SL male/unsexed    No picture yet.
Bagridae Bagrichthys macracanthus (Bleeker, 1854) Fr native  Trey chek tum (Khmer)  25.00 cm SL male/unsexed  Known from the Mekong basin. Found in Tonlé Sap and Stung Treng (Ref. 36654). 
Bagridae Bagrichthys macropterus (Bleeker, 1854) Fr native  Trey chek tum (Khmer)  30.00 cm TL male/unsexed  Known from the Mekong basin. Found in Tonlé Sap (Ref. 36654). 
Bagridae Bagrichthys obscurus Ng, 1999 Fr native   24.91 cm SL male/unsexed  Known from the Mekong basin (Ref. 43281). 
Cyprinidae Balantiocheilos melanopterus (Bleeker, 1850) Fr, Aq native  Trey kiet srawng (Khmer), Trey kiet srang (Khmer)  35.00 cm SL male/unsexed  Found in the Mekong River (Ref. 12693). Recorded from Tonlé Sap, Kompong and Kléang (Ref. 36654). Also Ref. 4537, 36686, 43281. 
Balitoridae Balitora annamitica Kottelat, 1988 Fr, Or native   12.00 cm TL male/unsexed  Recorded from Grande Cascade near Boun Long in the drainage of Srépok, Mekong basin, northeastern Cambodia (Ref. 37826). Utilized in the aquarium trade (Ref. 12693). Also Ref. 26580. 
Balitoridae Balitora meridionalis Kottelat, 1988 Fr native   8.15 cm SL male/unsexed   
Balitoridae Balitoropsis zollingeri (Bleeker, 1853) Fr native   10.00 cm TL male/unsexed  Found under boulders in fast water of a small stream just south of Stung Treng (Ref.12693). Occurs in the Mekong basin (Ref. 43281) and the Great Lake (Ref. 36686). 
Cyprinidae Barbichthys laevis (Valenciennes, 1842) Fr native  Trey phkar kor (Khmer), Trey Pruol Thmâr (Khmer), Phkarkor (Khmer), Trey andat (Khmer), Trey andat pee (Khmer), Trey Andat Pi (Khmer), Trey pkar kor (Khmer), Trey pruol thmawr (Khmer)  31.00 cm TL male/unsexed  Known from the Mekong basin (Ref. 12693, 43281). Most often seen in the Tonlé Sap from October through December as flood waters recede. Formerly common in the Tonlé Sap, but fishermen now report it as rare (Ref. 12693). Reported from Battembang (Ref. 36654). 
Cyprinidae Barbodes aurotaeniatus (Tirant, 1885) Fr native  Trey angkat prak (Khmer)  9.00 cm TL male/unsexed  Occurs in the Mekong basin (Ref. 12693, 27732). Found in Stung O krien, Stung Po Ben (Ref. 36654). Also Ref. 43281. 
Cyprinidae Barbodes binotatus (Valenciennes, 1842) Fr native  Kulprich (Khmer)  20.00 cm SL male/unsexed  Known from the Mekong basin (Ref. 12693). Found in Boum Long, Tuk Sap, Sianoukville, O Po Kampon and Kirikum (Ref. 36654). Also Ref. 3902. 
Cyprinidae Barbodes rhombeus (Kottelat, 2000) Fr native   6.50 cm SL male/unsexed  Known from the Mekong basin. Also Ref. 43281. 
Cyprinidae Barbonymus altus (Günther, 1868) Fr native  Kahe (Khmer), Trey kahe (Khmer), Trey kahè (Khmer), Trey kahe khor horm (Khmer), Trey kaho (Khmer) common (usually seen) 25.00 cm TL male/unsexed  Occurs in the Mekong basin (Ref. 12693, 27732, 26580), around the Tonle Sap river, Great Lake (Ref. 36651), Stung Sang and Sékong at Stung Treng (Ref. 36654). 
Cyprinidae Barbonymus balleroides (Valenciennes, 1842) Fr native   30.00 cm TL male/unsexed   
Cyprinidae Barbonymus gonionotus (Bleeker, 1849) Fr, Fi, Aq native  Chhpin (Khmer), Trey chhpin (Khmer), Trey chhpin brak (Khmer) scarce (very unlikely) 43.00 cm TL male/unsexed  Occurs in the Mekong basin (Ref. 12693, 27732). Found around the Tonle Sap river and Great Lake (Ref. 36651). Not commonly taken in the dai nets of the Tonlé Sap, but much more likely to be caught in the large traps of the Great Lake (Ref. 12693). Cultured in rice fields in Svay Rieng (Ref. 121504). Also Ref. 1739, 7306, 8984, 36662, 33813, 37772. 
Cyprinidae Barbonymus schwanefeldii (Bleeker, 1854) Fr, Fi native  Trey kahe (Khmer), Trey kahe loeung (Khmer)  35.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 12693, 27732). Found in Srépok, Tonlé Sap, Battembang, Siem Reap (Ref. 36654). Also Ref. 6327. 
Gobiidae Bathygobius fuscus (Rüppell, 1830) Fr, Fi native   12.00 cm TL male/unsexed  Found in Mekong delta (Ref. 12693). 
Siluridae Belodontichthys truncatus Kottelat & Ng, 1999 Fr native  Trey klang hay (Khmer), Khlang hai (Khmer)  60.00 cm SL male/unsexed  Known from the Mekong River drainage (Ref. 38432). Found around the Tonle Sap river, Great Lake (Ref. 36651) and Phnom Penh (Ref. 36654). Presently large numbers are being taken near Stung Treng by explosives. Around the Great Lake it is put on ice for export to Thailand (Ref. 12693). Also 33813, 36662. 
Osphronemidae Betta prima Kottelat, 1994 Fr native   5.00 cm SL male/unsexed  Found in the Mekong basin (Ref. 43281). 
Osphronemidae Betta pugnax (Cantor, 1849) Fr native   6.73 cm SL male/unsexed  Know from Tuk Sap, Kirikum, Sianoukville, Stung Tong Hong, O Po Kampun and Stung Treng (Ref. 36654). 
Osphronemidae Betta siamorientalis Kowasupat, Panijpan, Ruenwongsa & Jeenthong, 2012 Fr native   3.61 cm SL male/unsexed  found in Known from Banteay Meanchey province (Ref. 93122).  No picture yet.
Osphronemidae Betta splendens Regan, 1910 Fr native  Trey kroem phloek (Khmer)  6.50 cm TL male/unsexed  Also Ref. 3902. 
Osphronemidae Betta stiktos Tan & Ng, 2005 Fr native   2.82 cm SL male/unsexed  Known from the Mekong drainage (Ref. 56613). 
Sciaenidae Boesemania microlepis (Bleeker, 1858) Fr, Br, Fi native  Prama (Khmer), Proma (Khmer), Trey pama (Khmer), Trey promah (Khmer)  100.00 cm SL male/unsexed  Known from the Mekong basin (Ref. 37772). Found around the Tonle Sap River and the Great Lake (Ref. 36651), Sékong at Stung Treng (Ref. 36654). Occurs in flowing waters (Ref. 36686). Also Ref. 37772. 
Oxudercidae Boleophthalmus boddarti (Pallas, 1770) Fr, Br, M native   22.00 cm TL male/unsexed  Occurs in the Mekong. 
Danionidae Boraras urophthalmoides (Kottelat, 1991) Fr native  Trey changwa chhnoht (Khmer)  4.00 cm TL male/unsexed  Known from the Mekong basin. 
Soleidae Brachirus harmandi (Sauvage, 1878) Fr, Fi native  Trey andat chhke (Khmer)  10.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 12693). Known from Tonlé Sap and Stung Tong Hong (Ref. 36654). Also Ref. 27732, 43281. 
Soleidae Brachirus orientalis (Bloch & Schneider, 1801) Fr, Br native  Trey andat chhke nis (Khmer)  38.00 cm TL male/unsexed  Occurs in the Mekong basin (Ref. 12693). Found in Tonle Sap and Great Lake (Ref. 33813). 
Soleidae Brachirus panoides (Bleeker, 1851) Fr, Br native  Trey andat chhke veng (Khmer)  20.00 cm TL male/unsexed  Occurs in the Mekong basin. Found in Tonle Sap and Great Lake (Ref. 33813). 
Soleidae Brachirus siamensis (Sauvage, 1878) Fr native   15.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 43281).  No picture yet.
Gobiidae Brachygobius aggregatus Herre, 1940 Fr, Br native   4.40 cm SL male/unsexed  Known from the Mekong basin. 
Gobiidae Brachygobius kabiliensis Inger, 1958 Fr native   1.80 cm SL male/unsexed  Occurs in the Mekong basin. Found in Beng Kebal Damrey (Ref. 36654). 
Gobiidae Brachygobius mekongensis Larson & Vidthayanon, 2000 Fr native   1.75 cm SL male/unsexed  Known from the Mekong River (Ref. 38652). 
Gobiidae Brachygobius sua (Smith, 1931) Fr native   4.20 cm TL male/unsexed   
Dasyatidae Brevitrygon imbricata (Bloch & Schneider, 1801) Fr, Br, M, Fi native  Scaly whipray (English), Trey bawbel (Khmer), Trey påbel (Khmer), Trey prabel (Khmer)  25.50 cm WD male/unsexed ;31.00 cm WD female  Reported from the Great Lake, but probably may refer to Amphotistius laosensis (Ref. 12693). Also Ref. 3902, 36654, 36686. 
Butidae Butis amboinensis (Bleeker, 1853) Fr native   14.00 cm SL male/unsexed  Found in the area of Sianoukville (Ref. 36654). 
Butidae Butis butis (Hamilton, 1822) Fr, Br native   15.00 cm TL male/unsexed  Fairly common in the Mekong delta that is probably found upstream to the edge of the tidal zone (Ref. 12693). 
Butidae Butis koilomatodon (Bleeker, 1849) Fr native   10.70 cm TL male/unsexed  Probably found upstream to the edge of the tidal zone in Cambodian Mekong. 
Gobiidae Caragobius urolepis (Bleeker, 1852) Fr native   8.50 cm SL male/unsexed  Known from the Mekong basin. 
Tetraodontidae Carinotetraodon lorteti (Tirant, 1885) Fr native  Trey kampot (Khmer), Trey kepot (Khmer)  6.00 cm SL male/unsexed  Occurs in the Mekong basin. Known from Tonlé Sap (Ref. 36654). Also Ref. 13214. 
Cyprinidae Catlocarpio siamensis Boulenger, 1898 Fr, Fi, Pr native  Kolreang (Khmer), Kahor (Khmer), Kulreang (Khmer), Trey kahao (Khmer), Trey kaho (Khmer), Trey kano (Khmer), Trey kolreang (Khmer), Trey kolriang (Khmer), Trey krawhao (Khmer), Trey kromawl (Khmer) scarce (very unlikely) 300 cm TL male/unsexed  Known from the Mekong basin (Ref. 12693). A migratory species occurring from below the Khoné Falls to the Tonle Sap River and the Great Lake (Ref. 37772). Very rare in the Great Lake of the Tonle Sap, where fishing has been prohibited for several years (Ref. 10431), under Cambodian Fisheries Laws (Ref. 37874). Has become quite rare throughout the country (Ref. 12693), but reported to be found all the year in many places of the Mekong basin (Ref. 37770). Known from Mae Khong at Kranchmar, Tonlé Sap, Beng Kebal Damrey (Ref. 36654). Juveniles measuring 2-6 cm are found at Sray Son Thor in Kompong Cham Province and at Muk Kompul in Kandal Province (Ref. 37770). Also Ref. 33813, 43281. 
Ariidae Cephalocassis borneensis (Bleeker, 1851) Fr native  Trey kaok (Khmer), Trey kåok (Khmer)  30.00 cm SL male/unsexed  Found in the Mekong basin (Ref. 12693). Occurs in Quatre Bras, Phnom Penh, Grand Lac, Tonlé Sap (Ref. 36654). Also Ref. 36662. 
Cyprinidae Ceratogarra cambodgiensis (Tirant, 1883) Fr native   24.00 cm TL male/unsexed  Found in the Mekong River (Ref. 12693) and Battembang (Ref. 36654). Also Ref. 27732, 43281. 
Cyprinidae Ceratogarra fasciacauda (Fowler, 1937) Fr native   11.00 cm SL male/unsexed  Caught with large haul seines in the main stream of the Mekong (Ref. 12693). Also Ref. 43281. 
Channidae Channa gachua (Hamilton, 1822) Fr native   32.90 cm TL male/unsexed  Occurs in the Mekong basin. Also Ref. 43281. 
Channidae Channa lucius (Cuvier, 1831) Fr native  Trey kanh chorn chey (Khmer), Trey kanchon chey (Khmer)  53.00 cm TL male/unsexed  Known from the Mekong basin (Ref. 43281). Found in Réam, Tonlé Sap, Beng Kebal Damrey, Angkor (Ref. 36654) and Great Lake (Ref. 33813). Also Ref. 43281. 
Channidae Channa marulius (Hamilton, 1822) Fr native  Trey raws (Khmer)  183 cm TL male/unsexed  Known from the Mekong basin. Found in Sambor rapids and Stung Treng (Ref. 36654). 
Channidae Channa melasoma (Bleeker, 1851) Fr native   30.00 cm SL male/unsexed  Occurs in the Mekong basin. Found in Boum Long (Ref. 36654). 
Channidae Channa micropeltes (Cuvier, 1831) Fr, Fi native  Riel (Khmer), Chhdor (Khmer), Diep (Khmer), Trey chhdaur (Khmer), Trey chhdor (Khmer), Trey diep (Khmer) common (usually seen) 130 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 12693). Found around the Tonle Sap river, Great Lake (Ref. 36651, 36686) and Siem (Ref. 36654). Also Ref. 27732, 33813, 36662, 37772. 
Channidae Channa orientalis Bloch & Schneider, 1801 Fr, Fi native  Trey ksan (Khmer)  33.00 cm TL male/unsexed  Known from Ratanakiri, Boum Long, Bokeo, Tuk Sap, Srépok, Stung Po Ben, Stung Santrea, Sianoukville, Kirikum, Stung O Krien, Battembang, Angkor and Bokor (Ref. 36654). Also Ref. 7050. 
Channidae Channa striata (Bloch, 1793) Fr, Fi native  Ptuok (Khmer), Phtok (Khmer), Ros (Khmer), Trey phtuok (Khmer), Trey ras (Khmer), Trey raws (Khmer), Trey ros (or ras) (Khmer) common (usually seen) 100.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 27732). Found around the Tonle Sap river, Great Lake = Lake Tonle Sap (Ref. 36651, 36686), Ratanakiri, Boum Long, Kompong Chnang, Réam, Beng Kebal Damrey, Sianoukville and Angkor (Ref. 36654). Much more common in flood-plain lakes and smaller streams than in the Mekong mainstream (Ref. 37770). Also Ref. 3902, 27732, 33813, 36662, 37772, 45353. 
Chanidae Chanos chanos (Fabricius, 1775) Fr native  Trey nuan chan (Khmer) occasional (usually not seen) 180 cm SL male/unsexed ;124 cm SL female  Known from the Mekong basin. 
Chaudhuriidae Chaudhuria caudata Annandale, 1918 Fr native   6.00 cm TL male/unsexed  Occurs in the Mekong basin. Known from Sré Umbell (Ref. 36654). 
Notopteridae Chitala blanci (d'Aubenton, 1965) Fr, Fi native  Trey krai (Khmer)  120 cm SL male/unsexed  Known from the mainstream of the Mekong River (Ref. 27732). Occurs in the Tonle Sap River and Great Lake (Ref. 33813) and in Beng-Cha, upper Mekong (Ref. 33021). Observed in Stung Treng market (Ref. 10431). From Kratie downstream to Kompong Cham, it is reported to migrate into smaller tributaries when water level begins to rise and returning to the Mekong mainstream when water levels starts to recede (Ref. 37770). Regularly sold in the markets of cities and towns along the Mekong river in northern Cambodia (Ref. 12693). Also Ref. 6376, 12255, 12693, 36654, 43281, 94476. In range Ref. 12041. 
Notopteridae Chitala ornata (Gray, 1831) Fr, Fi native  Trey krai (Khmer), Kaey (Khmer), Kray (Khmer), Trey kray (Khmer)  100.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 12693) and Tonle Sap and Great Lake (Ref. 33813). Observed in Stung Treng market (Ref. 10431). Individuals from the Great Lake are shipped on ice to markets in Thailand (Ref. 12693). Also Ref. 27732, 36686. 
Cyprinidae Cirrhinus cirrhosus (Bloch, 1795) Fr introduced  Trey krawlang (Khmer)  100.00 cm SL male/unsexed   
Cyprinidae Cirrhinus jullieni Sauvage, 1878 Fr, Fi native  Trey krawlang (Khmer), Trey lenh (Khmer), Trey phkar cha (Khmer), Trey Real (Khmer), Trey riel (Khmer)  20.00 cm SL male/unsexed  Known from the Mekong River (Ref. 12693, 33488). Found in Stung Treng (Ref. 33021) and Tonlé Sap (Ref. 36654). Observed in small numbers at Stung Treng in February 1994 and at Phnom Penh markets in January-February 1994 (Ref. 10431). Also Ref. 43281. 
Cyprinidae Cirrhinus microlepis Sauvage, 1878 Fr, Fi native  Kralang (Khmer), Kroleng (Khmer), Pruol (Khmer), Trey kanlang (Khmer), Trey krawlang (Khmer), Trey pruol (Khmer) common (usually seen) 65.00 cm SL male/unsexed  Found in the Mekong River. Known from below the Khone Falls to the Tonle Sap River and the Great Lake (Ref. 37772). Occurs in large numbers in the Tonlé Sap in December, with catch steadily declining as the fishing season progresses (Ref. 12693). It is an important species in the dai fisheries in the Tonle Sap River when it migrates downstream the Tonle Sap and into the Mekong during December to February (Ref. 37770). Also Ref. 10431, 27732, 36654, 33813, 43281, 45353. 
Cyprinidae Cirrhinus molitorella (Valenciennes, 1844) Fr native  Trey krawlang (Khmer), White lady carp (English), Trey phkar kor (Khmer)  55.00 cm TL male/unsexed  Known from the Mekong basin (Ref. 12693, 27732). Found in Tonle Sap and Great Lake (Ref. 33813). Observed in Stung Treng and Phnom Penh, but always in small numbers (Ref. 10431). Also Ref. 43281. 
Clariidae Clarias fuscus (Lacepède, 1803) Fr native   24.50 cm SL male/unsexed   
Clariidae Clarias gariepinus (Burchell, 1822) Fr, Aq introduced  Trey andaing afrik (Khmer)  170 cm TL male/unsexed  Introduced in Mekong River (Ref. 12693). Also Ref. 9421, 58859. 
Clariidae Clarias gracilentus Ng, Hong & Tu, 2011 Fr native     
Clariidae Clarias macrocephalus Günther, 1864 Fr, Fi native  Trey andaing toun (Khmer)  120 cm TL male/unsexed  Known from the Mekong basin (Ref. 37772). Found in Tonlé Sap river, Kompong Churang, Stung Treng, Ream (Ref. 36654) and Great Lake = Lake Tonle Sap (Ref. 33813, 45353). 
Clariidae Clarias meladerma Bleeker, 1846 Fr native  Trey andaing toun (Khmer)  35.00 cm SL male/unsexed  Found in the Mekong River. Also Ref. 43281. 
Clariidae Clarias nieuhofii Valenciennes, 1840 Fr native  Trey andaing ngaing (Khmer)  50.00 cm TL male/unsexed  Found in Tonlé Sap, Phnom Penh, Ream and Bokor (Ref. 36654). 
Ehiravidae Clupeichthys aesarnensis Wongratana, 1983 Fr native  Trey bawndol ampeou (Khmer), Bondol ampov (Khmer)  7.00 cm SL male/unsexed  Known from the Mekong basin (Ref. 12693, 27732). Also found in the Tonle Sap River (Ref. 33813). 
Ehiravidae Clupeichthys goniognathus Bleeker, 1855 Fr native  Trey bawndol ampeou (Khmer), Trey båndaul ampauv (Khmer), Trey båndaul ampaw (Khmer)  12.00 cm TL male/unsexed  Occurs in the Mekong basin. Found in Tonlé Sap, Phnom Penh (Ref. 36654). Also Ref. 33813. 
Ehiravidae Clupeoides borneensis Bleeker, 1851 Fr native  Trey bawndol ampeou (Khmer)  8.00 cm SL male/unsexed  Known from the Mekong basin (Ref. 188), where it commonly occurs upstream at least as far as the Great Lake (Ref. 12693) near Siem Reap (Ref. 45353). Found in Tonle Sap river (Ref. 36686). Also Ref. 12693, 27732, 33813, 43281. 
Ailiidae Clupisoma sinense (Huang, 1981) Fr native  Trey chhwiet prak (Khmer)  31.00 cm SL male/unsexed  Found in the Mekong basin (Ref. 12693, 43281). 
Engraulidae Coilia lindmani Bleeker, 1857 Fr native  Trey chonluanh moan (Khmer)  20.00 cm SL male/unsexed  The most common grenadier anchovy in the Cambodian Mekong ranging from the delta to Great Lake and as far upstream as Stung Treng (Ref. 12693). Occurs in Tonlé Sap (Ref. 36654) near Siem Reap (Ref. 45353). Seems to have no discernable migratory pattern in the lower Mekong (Ref. 12693). Also Ref. 7050, 36662, 33813. 
Engraulidae Coilia macrognathos Bleeker, 1852 Fr native  Trey chonluanh moan (Khmer)  28.40 cm TL male/unsexed  Found in Tonle Sap and the Great Lake. Also Ref. 33813, 36686. 
Ehiravidae Corica laciniata Fowler, 1935 Fr native  Trey bawndol ampeou (Khmer)  7.00 cm SL male/unsexed  Known from the Mekong basin. (Ref. 12693). Found in Stung Chihrang (Ref. 36654). 
Cyprinidae Cosmochilus harmandi Sauvage, 1878 Fr, Fi native  Trey kampoul bay (Khmer), Kampoul bai (Khmer), Kampoulbai (Khmer), Trey dampul bay (Khmer), Trey kampaul bay (Khmer), Trey kômpul bay (Khmer) scarce (very unlikely) 100.00 cm TL male/unsexed  Occurs in the Mekong basin. Found in declining numbers below the Khone Falls to the Tonle Sap River and the Great Lake (Ref. 37772). Juveniles caught in the dai fishery of the Tonlé Sap are utilized for prahoc. Adults are sold fresh (Ref. 12693). Known from Stung Chinit and Kaskos (Ref. 36654). Also Ref. 33813, 43281 
Cyprinidae Crossocheilus atrilimes Kottelat, 2000 Fr native   16.40 cm TL male/unsexed  Known from the Mekong basin. Also Ref. 43281. 
Cyprinidae Crossocheilus cobitis (Bleeker, 1854) Fr native   14.80 cm TL male/unsexed  Known from the Mekong basin (Ref. 43281). 
Cyprinidae Crossocheilus oblongus Kuhl & Van Hasselt, 1823 Fr native   16.00 cm SL male/unsexed  Known from the Mekong basin (Ref. 43281). 
Cyprinidae Crossocheilus reticulatus (Fowler, 1934) Fr native  Trey changwa chuhn chuak (Khmer), Trey changva lchaung (Khmer)  17.00 cm SL male/unsexed  Found in the Mekong River (Ref. 12693), Tonlé Sap and Battembang (Ref. 36654). Used to make prahoc (Ref. 36686). Also Ref. 27732, 36662, 43281. 
Ariidae Cryptarius daugueti (Chevey, 1932) Fr native  Trey kaok (Khmer), Trey kanchok kandor (Khmer), Trey kåok (Khmer)  26.00 cm TL male/unsexed  Recorded from large rivers. Occurs in the Mekong basin (Ref. 12693). Found in Phnom Penh and Tonlé Sap (Ref. 36654). 
Xenocyprididae Ctenopharyngodon idella (Valenciennes, 1844) Fr, Fi, Aq introduced  Trey srokchen (Khmer)  150 cm TL male/unsexed   
Cyprinidae Cyclocheilichthys apogon (Valenciennes, 1842) Fr, Fi native  Trey srakardam (Khmer), Sraka kdam (Khmer), Trey kros (Khmer), Trey sråka kdam (Khmer), Trey srawka kdam (Khmer) fairly common (chances are about 50%) 28.70 cm TL male/unsexed  Sometimes sold fresh along the Tonlé Sap and used to make prahoc (Ref. 12693). Known from Beng Kebal Damrey, Stung Treng (Ref. 36654) and Sangke river, Battambang province (Ref. 41486). Also Ref. 36651, 36662. 
Cyprinidae Cyclocheilichthys armatus (Valenciennes, 1842) Fr native  Phkar kor (Khmer), Sraka kdam (Khmer), Trey pka kor (Khmer)  23.00 cm SL male/unsexed  Known from the Mekong basin (Ref. 27732). Found around the Tonle Sap river and Great Lake (Ref. 36651) and Battembang (Ref. 36654). Also Ref. 7050, 33813, 43281, 45353. 
Cyprinidae Cyclocheilichthys enoplos (Bleeker, 1849) Fr, Fi native  Chhdor (Khmer), Chhkok (Khmer), Diep (Khmer), Trey chhkok (Khmer), Trey chkok (Khmer) common (usually seen) 74.00 cm SL male/unsexed  Known from the Mekong basin. A migratory species (Ref. 37772) found around the Tonle Sap river, Great Lake (Ref. 36651) and Sékong at Stung Treng (Ref. 36654). Juveniles and sub-adults migrate out of flooded areas back into the river at receding water and start migrating upstream in the Mekong. Reported to come down the Tonle Sap River into the Mekong. Constitutes an important part of the catch in the Tonle Sap River during December to February (Ref. 37770). Its numbers have declined below Khone Falls to the Tonle Sap River and the Great Lake (Ref, 37772). Also Ref. 7050, 33813, 36662, 43281, 45353. 
Cyprinidae Cyclocheilichthys furcatus Sontirat, 1989 Fr native  Trey chhkok ploeung (Khmer)  60.00 cm SL male/unsexed  Known from the middle Mekong basin (Ref. 12693). Found in Tonlé Sap (Ref. 36686). Also Ref. 43281. 
Cyprinidae Cyclocheilichthys heteronema (Bleeker, 1854) Fr native  Trey chhkok pookmawt bai (Khmer)  12.00 cm SL male/unsexed  Known from the Mekong basin. Recorded from the Great Lake (Ref. 12693). Museum: Lake Tonle Sap at Siem Reap, NSMT-P 35891. Also Ref. 43281. 
Cyprinidae Cyclocheilichthys lagleri Sontirat, 1989 Fr native  Trey srawka kdam (Khmer)  15.00 cm SL male/unsexed  Found in Tonle Sap river and Great Lake (Ref. 33813). 
Cynoglossidae Cynoglossus feldmanni (Bleeker, 1854) Fr native  Trey andat chhke (Khmer)  25.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 12693). Known in Prek Tasom (Ref. 12693), Petit Lac, Tonlé Sap and Great Lake (Ref. 33813, 36654). Also Ref. 5297, 43281. 
Cynoglossidae Cynoglossus microlepis (Bleeker, 1851) Fr native  Trey andat chhke (Khmer), Andat chhke (Khmer), Trey andat chhkê (Khmer)  32.50 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 43281). Found in Tonlé Sap, Grand Lac and Mae Khong (Ref. 36654). Also Ref. 5297, 12693, 36686. 
Cynoglossidae Cynoglossus puncticeps (Richardson, 1846) Fr, Br, M native  Trey andat chhke (Khmer)  35.00 cm SL male/unsexed   
Cynoglossidae Cynoglossus trulla (Cantor, 1849) Fr, Br, M native  Trey andat chhke (Khmer)  45.00 cm SL male/unsexed   
Cyprinidae Cyprinus carpio Linnaeus, 1758 Fr, Fi, Aq introduced  Trey carp samahn (Khmer), Keatsrong (Khmer), Trey kap (Khmer), Cá dáy (Vietnamese), Cá gái (Vietnamese), Cá gáy (Vietnamese)  120 cm TL male/unsexed  Occurs in Mekong basin (Ref. 12693), Tonle Sap and Great Lake (Ref. 33813). Cultured in rice fields in Svay Rieng (Ref. 121504). Also Ref. 185, 8984, 12228, 26920, 58859. 
Danionidae Danio albolineatus (Blyth, 1860) Fr native   9.58 cm TL male/unsexed  Occurs in the Mekong basin (Ref. 12693). Known from O Po Kampon, Boum Long, Snoc Trou, Tuk Sap, Kirikum, Sianoukville, Bokéo and Sré Umbel (Ref. 36654). Also Ref. 7050, 12693, 26580, 43281. 
Lobotidae Datnioides microlepis Bleeker, 1854 Fr native  Trey khlar (Khmer), Trey khla (Khmer), Trey kla (Khmer) common (usually seen) 55.00 cm TL male/unsexed  Occurs in the Mekong basin (Ref. 12693). Found in Tonlé Sap, Prek Phnan (Ref. 36654) and rare in Great Lake (Ref. 36686). Also Ref. 7050. 
Lobotidae Datnioides polota (Hamilton, 1822) Fr native  Trey khlar (Khmer)  30.00 cm SL male/unsexed  Occurs in the Mekong. 
Lobotidae Datnioides pulcher (Kottelat, 1998) Fr native   40.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 22732, 43281). 
Lobotidae Datnioides undecimradiatus (Roberts & Kottelat, 1994) Fr native   40.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 27732). Also Ref. 10425, 43281. 
Zenarchopteridae Dermogenys siamensis Fowler, 1934 Fr native   4.00 cm SL male/unsexed ;6.00 cm SL female  Occurs in the Mekong basin (Ref. 43281). Also Ref. 109633. 
Cyprinidae Desmopuntius pentazona (Boulenger, 1894) Fr native   8.80 cm TL male/unsexed  Found in Tuk Sap (Ref. 36654). . 
Danionidae Devario aequipinnatus (McClelland, 1839) Fr native  Trey changwa (Khmer)  15.00 cm TL male/unsexed  Known from the Mekong basin. 
Danionidae Devario laoensis (Pellegrin & Fang, 1940) Fr native   8.00 cm TL male/unsexed  Found in the Mekong River. 
Leiognathidae Deveximentum ruconius (Hamilton, 1822) Fr, Br native   8.00 cm TL male/unsexed  Likely to occur in the tidal zone of the Mekong delta. . 
Tetraodontidae Dichotomyctere fluviatilis (Hamilton, 1822) Fr native  Trey kampot (Khmer)  17.00 cm TL male/unsexed  Found in Tonle Sap and Great Lake (Ref. 33813). 
Tetraodontidae Dichotomyctere nigroviridis (Marion de Procé, 1822) Fr native  Trey kampot (Khmer)  17.00 cm TL male/unsexed  Occurs in the Mekong basin. Found in Great Lake and Tonle Sap river (Ref. 33813). 
Tetraodontidae Dichotomyctere ocellatus (Steindachner, 1870) Fr native  Trey kampot (Khmer)  8.00 cm TL male/unsexed  Occurs in the Mekong basin. Found in slow flowing or standing habitats, seen at Great Lake (Ref. 36686). 
Cyprinidae Discherodontus ashmeadi (Fowler, 1937) Fr native  Trey kantoei krahawm (Khmer) scarce (very unlikely) 13.60 cm SL male/unsexed  Known from the middle Mekong (Ref. 12693) 
Syngnathidae Doryichthys boaja (Bleeker, 1850) Fr native  Trey kabo (Khmer), Trey chay kråpoeu (Khmer), Trey chay krawpoeu (Khmer)  41.00 cm SL male/unsexed  Occurs in the lower Mekong (Ref. 12693). Found in Tonlé Sap, Great Lake (Ref. 36654, 36686). Also Ref. 43281. 
Syngnathidae Doryichthys contiguus Kottelat, 2000 Fr native   10.98 cm SL male/unsexed  Known from the Mekong basin. Also Ref. 43281. 
Eleotridae Eleotris fusca (Forster, 1801) Fr native  Trey damrey khman (Khmer)  26.00 cm TL male/unsexed   
Cyprinidae Epalzeorhynchos frenatum (Fowler, 1934) Fr native  Trey kuol chek (Khmer)  15.00 cm TL male/unsexed  Occurs in the Mekong River (Ref. 27732). Known from Tonlé Sap and Phnom Penh (Ref. 36654). 
Cyprinidae Epalzeorhynchos munense (Smith, 1934) Fr, Fi native  Trey andat pee (Khmer)  9.30 cm SL male/unsexed  Found in the Mekong River. Used to make prahoc along the Tonlé Sap (Ref. 12693). It moves into inundated forests during flood season and returns to the river as water levels recede (Ref. 36686). 
Danionidae Esomus longimanus (Lunel, 1881) Fr native  Trey changwa phlieng (Khmer), Mekong flying barb (English)  8.00 cm SL male/unsexed  Known from the Mekong River (Ref.12693). Found in Snoc Trou, Boum Long (Ref. 36654) and Great Lake (Ref. 36686). Also Ref. 36662, 43281. 
Danionidae Esomus metallicus Ahl, 1923 Fr native  Trey changwa phlieng (Khmer), Trey changwar phlieng (Khmer)  7.50 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 12693), O Po Kampon, Snoc Trou and Stung Sang (Ref. 36654). Also Ref. 27732, 36662, 43281. 
Plotosidae Euristhmus nudiceps (Günther, 1880) Fr, Br native  Trey andaing tonlay (Khmer)  33.00 cm TL male/unsexed  Occurs in the freshwater reaches of the Mekong estuary. 
Gobiidae Favonigobius aliciae (Herre, 1936) Fr, Br native   5.00 cm TL male/unsexed  Known from the Mekong delta and may also be found in the tidal zone. 
Dasyatidae Fluvitrygon oxyrhynchus (Sauvage, 1878) Fr native   36.00 cm WD male/unsexed  Known from Pnom Phen and Mekong River (Ref. 40953). 
Poeciliidae Gambusia affinis (Baird & Girard, 1853) Fr introduced   5.10 cm TL male/unsexed ;7.00 cm TL female   
Cyprinidae Garra fisheri (Fowler, 1937) Fr native  Trey kantuy khmao (Khmer)  5.00 cm TL male/unsexed  Found in Sangke river, Battambang province (Ref. 41486). 
Cyprinidae Garra fuliginosa Fowler, 1934 Fr native   18.00 cm SL male/unsexed  Known from the Mekong River. 
Gerreidae Gerres filamentosus Cuvier, 1829 Fr, Br, M native  Trey doh angkor (Khmer), Cá móm (Vietnamese)  39.00 cm TL male/unsexed  Occasionally found in the freshwater tidal zone of the Mekong. 
Gobiidae Glossogobius aureus Akihito & Meguro, 1975 Fr native  Trey ksan (Khmer), Trey Khoan (Khmer)  25.00 cm SL male/unsexed  Found upstream well above the tidal zone of Mekong (Ref. 12693), Stung O Krien, Tonlé Sap river, Stung Treng, Beng Khmnonh (Phnom Penh) (Ref. 36654) and Great Lake = Lake Tonle Sap (Ref. 33813). Also Ref. 45353. 
Gobiidae Glossogobius giuris (Hamilton, 1822) Fr, Br, M native  Trey ksan (Khmer), Khane (Khmer), Cá böng dá (Vietnamese)  50.00 cm SL male/unsexed  Found in the lower Mekong basin. 
Gobiidae Glossogobius koragensis Herre, 1935 Fr native  Trey ksan (Khmer)  25.00 cm male/unsexed  Common in the lower Mekong. 
Sisoridae Glyptothorax coracinus Ng & Rainboth, 2008 Fr native   8.24 cm SL male/unsexed  Found only in the short coastal drainages draining the western face of the Krâvanh (Cardamom) Mountains and Dâmrei (Elephant) Mountains in southwest Cambodia (Ref. 78392). 
Sisoridae Glyptothorax fuscus Fowler, 1934 Fr native  Trey kanchos krawbey (Khmer), Trey krawbey (Khmer)  12.10 cm SL male/unsexed  Known from the Mekong basin (Ref. 12693). Found in Ream and Stung Tong Hong (Ref. 36654). Also Ref. 43281. 
Sisoridae Glyptothorax lampris Fowler, 1934 Fr native  Trey krawbey (Khmer)  12.10 cm SL male/unsexed  Known from the Mekong basin (Ref. 12693), Tonlé Sap, Battembang and Stung Santrea (Ref. 36654). Also Ref. 43281. 
Sisoridae Glyptothorax laosensis Fowler, 1934 Fr native   10.80 cm SL male/unsexed  Known from the Mekong basin. Also Ref. 43281. 
Sisoridae Glyptothorax major (Boulenger, 1894) Fr native   14.40 cm TL male/unsexed   
Sisoridae Glyptothorax platypogonides (Bleeker, 1855) Fr native   12.30 cm TL male/unsexed  Found in Boum Long and Kampot (Ref. 36654). 
Gobiidae Gobiopsis macrostoma Steindachner, 1861 Fr native   10.00 cm SL male/unsexed   
Gobiidae Gobiopterus chuno (Hamilton, 1822) Fr native   3.00 cm SL male/unsexed  Found in the Mekong River (Ref. 12693). Also Ref. 43281. 
Gyrinocheilidae Gyrinocheilus aymonieri (Tirant, 1883) Fr, Fi native  Chun chuok dai (Khmer), Trey bandaul chek (Khmer), Trey bandaul sok (Khmer), Trey komear (Khmer), Trey smok (Khmer), Trey thmår (Khmer)  28.00 cm SL male/unsexed  Known from the Mekong basin (Ref. 12693), around the Tonle Sap river and Great Lake (Ref. 36651), Battembang, Stung Treng and rapids of Sambor (Ref. 36654). Also Ref. 27732, 33813, 36686, 26580. 
Gyrinocheilidae Gyrinocheilus pennocki (Fowler, 1937) Fr native  Trey smok (Khmer), Chungchuk (Khmer), Seis (Khmer)  28.00 cm SL male/unsexed  Found in the Mekong basin. Also Ref. 13074, 26580. 
Cyprinidae Hampala dispar Smith, 1934 Fr, Fi native  Trey khmann (Khmer), Trey khman (Khmer)  35.00 cm SL male/unsexed  Occurs in the Mekong River (Ref. 12693). Found in Tonle Sap, Great Lake (Ref. 33813) and Siem Reap (Ref. 36654). Also Ref. 27732, 36662, 43281. 
Cyprinidae Hampala macrolepidota Kuhl & Van Hasselt, 1823 Fr, Fi native  Trey khmann (Khmer), Trey khman (Khmer), Trey khmau (Khmer), Pla kasoop (Thai)  70.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 12693, 27732). Found in Srépok, Beng Kebal Damrey, Tonlé Sap (Ref. 36654) and Great Lake (Ref. 33813). A migratory species (Ref. 37772). Also Refs. 3902, 36662, 43281, 45353. 
Pangasiidae Helicophagus leptorhynchus Ng & Kottelat, 2000 Fr native   47.20 cm SL male/unsexed  Known from the Mekong basin. Also Ref. 43281. 
Pangasiidae Helicophagus waandersii Bleeker, 1858 Fr native  Trey pra kandor (Khmer)  70.00 cm TL male/unsexed  Occurs in the Mekong basin. Found in Tonlé Sap and Phnom Penh (Ref. 36654). Also Ref. 7432, 12693. 
Helostomatidae Helostoma temminckii Cuvier, 1829 Fr native  Trey kantrawb (Khmer)  30.00 cm TL male/unsexed  Occurs in the Mekong basin. 
Ariidae Hemiarius stormii (Bleeker, 1858) Fr native  Trey kaok (Khmer)  50.00 cm TL male/unsexed  Occurs in the Mekong basin (Ref. 12693). Found in Tonle Sap and Great Lake (Ref. 33813). 
Bagridae Hemibagrus filamentus (Fang & Chaux, 1949) Fr, Br, Fi native   50.00 cm TL male/unsexed  Found in the lower Mekong basin. Common in the Great Lake. Marketed fresh. Also Ref. 38441. 
Bagridae Hemibagrus nemurus (Valenciennes, 1840) Fr, Fi native  Chhlang (Khmer), Trey chhlang (Khmer), Trey tasel (Khmer) occasional (usually not seen) 65.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 12693, 27732), around the Tonle Sap Great Lake and river (Ref. 36651), Kampot and Phnom Penh (Ref. 36654). Moves into flooded forests to spawn. In Tonle Sap, maximum numbers are found as it returns to rivers in November and December (Ref. 12693). Also Ref. 3902, 33813. 
Bagridae Hemibagrus planiceps (Valenciennes, 1840) Fr native   33.50 cm TL male/unsexed  Found 170 km on the road from Phnom Penh to Sianoukville (Ref. 36654). 
Bagridae Hemibagrus spilopterus Ng & Rainboth, 1999 Fr native   30.91 cm SL male/unsexed  Known from the lower Mekong River drainage. 
Bagridae Hemibagrus wyckii (Bleeker, 1858) Fr native  Trey chhlang thmor (Khmer)  90.00 cm TL male/unsexed  Known from the Mekong basin (Ref. 38441). Found in Beng Cha, Kampot (Ref. 36654), Tonle Sap and Great Lake (Ref. 33813). 
Bagridae Hemibagrus wyckioides (Fang & Chaux, 1949) Fr native  Trey khya (Khmer), Chhar (Khmer)  130 cm TL male/unsexed  Occurs in the Mekong basin (Ref. 12693, 27732). Rare in Tonle Sap and floodplain rivers of the lower Mekong (Ref. 36686). Known in Great Lake (Ref. 33813). Also Ref. 38441. 
Balitoridae Hemimyzon papilio Kottelat, 1998 Fr native   5.92 cm SL male/unsexed  Known from the Mekong basin. Also Ref. 43281. 
Siluridae Hemisilurus heterorhynchus (Bleeker, 1854) Fr native   80.00 cm TL male/unsexed  Found in Tonlé Sap (Ref. 36654). 
Siluridae Hemisilurus mekongensis Bornbusch & Lundberg, 1989 Fr, Fi native  Trey krormorm (Khmer), Ta aun (Khmer)  80.00 cm TL male/unsexed  Known from the Mekong basin (Ref. 12693). Also Ref. 43281. 
Dasyatidae Hemitrygon laosensis (Roberts & Karnasuta, 1987) Fr native  Trey bawbel (Khmer), Bobele (Khmer) common (usually seen) 62.00 cm WD male/unsexed  Found in the Mekong. Also Ref. 43281. 
Cyprinidae Henicorhynchus caudimaculatus (Fowler, 1934) Fr native  Trey riel (Khmer)  26.60 cm TL male/unsexed  Most likely to occur in Cambodian rivers that flow into the western end of the Great Lake (Ref. 12693). Recorded from O. Changni, small stream on road from Ann Long Mea to Ban Lung, Ratanakiri prov (Ref. 33488); Tonle Sap (Ref. 33813) and Mekong basin (Ref. 27732, 123185). Also Ref. 36686, 43281. 
Cyprinidae Henicorhynchus entmema (Fowler, 1934) Fr native   15.00 cm SL male/unsexed  Known from the Mekong basin (Ref. 123185). Also Ref. 43281. 
Cyprinidae Henicorhynchus siamensis (Sauvage, 1881) Fr, Fi native  Trey riel tob (Khmer), Trey real (Khmer), Trey riel (Khmer)  20.00 cm SL male/unsexed  Found in the Mekong River (Ref. 43281). Known from Phnom Penh (Ref. 36654) and Great Lake (Ref. 33813). Just upstream Phnom Penh to the Khone Falls, this migrates upstream during the period October to February. At Muk Kompul in Kandal Province, it moves upstream just before the full moon. Further upstream near Kratie, this fish undertakes migration during full moon and at Sambor, it migrates immediately after full moon (Ref. 37770). This is the most important fish in the annual dai (set-net) fishery in the Tonlé Sap. Used to make prahoc (Ref. 12693). Also Ref. 1632, 10431, 27732, 33488, 36662, 36686, 45353. 
Dasyatidae Himantura krempfi (Chabanaud, 1923) Fr native  Trey bawbel (Khmer), Trey påbel (Khmer), Trey prabel (Khmer)  40.00 cm WD male/unsexed  Found in the Mekong River (Ref. 12693), Phnom Penh and Grand Lac (Ref. 36654). Also Ref. 3902. 
Balitoridae Homaloptera confuzona Kottelat, 2000 Fr native   6.80 cm SL male/unsexed  Known from the Mekong river. Also Ref. 43281. 
Balitoridae Homaloptera orthogoniata Vaillant, 1902 Fr native   13.00 cm SL male/unsexed  Found insiem Reap (Ref. 36654). 
Balitoridae Homalopteroides indochinensis (Silas, 1953) Fr native   4.00 cm TL male/unsexed   
Balitoridae Homalopteroides smithi (Hora, 1932) Fr native  common (usually seen) 9.80 cm TL male/unsexed  Known from the Mekong basin (Ref. 27732, 26580). Known from Stung Tong Hong, Stung Santrea, Battembang and Siem Reap (Ref.36654). 
Balitoridae Homalopteroides tweediei (Herre, 1940) Fr native   4.00 cm SL male/unsexed 2 NG Known from the Mekong basin. Also Ref. 43281. 
Xenocyprididae Hypophthalmichthys molitrix (Valenciennes, 1844) Fr introduced  Trey carp sor (Khmer)  120 cm TL male/unsexed  Cultured in rice fields in Svay Rieng (Ref. 121504). 
Xenocyprididae Hypophthalmichthys nobilis (Richardson, 1845) Fr, Aq introduced   146 cm SL male/unsexed  Also Ref. 58859. 
Hemiramphidae Hyporhamphus limbatus (Valenciennes, 1847) Fr, Br, M, Fi native  Phtinh (Khmer), Trey phtaung (Khmer), Trey phtinh (Khmer), Trey phtoung (Khmer)  35.00 cm TL male/unsexed  Found as far upstream as Stung Treng and also in the Great Lake. A small number is also taken in the set-nets of the Tonlé Sap (Ref. 12693). Also Ref. 33813, 36651, 36662, 36686. 
Cyprinidae Hypsibarbus lagleri Rainboth, 1996 Fr, Fi native  Trey chhpin (Khmer)  40.00 cm SL male/unsexed  Occurs in the Mekong basin. Not found in the Tonlé Sap and the Great Lake (Ref. 12693). Also Ref. 36662, 43281. 
Cyprinidae Hypsibarbus malcolmi (Smith, 1945) Fr native  Trey chhpin (Khmer), Loloksor (Khmer)  50.00 cm SL male/unsexed  Known from the Mekong basin (Ref. 43281). 
Cyprinidae Hypsibarbus pierrei (Sauvage, 1880) Fr native  Trey chhpin (Khmer)  36.90 cm TL male/unsexed  Known from eastern Cambodia (Ref. 12693) and Tonlé Sap (Ref. 36654). Also Ref. 43281. 
Cyprinidae Hypsibarbus suvattii Rainboth, 1996 Fr native  Trey chhpin (Khmer)  35.00 cm SL male/unsexed  Known from South-West Cambodia (Ref. 26580). Found in coastal rivers of Cardamom mountains (Ref. 12693). 
Cyprinidae Hypsibarbus vernayi (Norman, 1925) Fr native  Trey chhpin meas (Khmer)  30.00 cm SL male/unsexed  Occurs in the Mekong basin. Also Ref. 43281. 
Cyprinidae Hypsibarbus wetmorei (Smith, 1931) Fr, Fi native  Trey chhpin krahorn (Khmer)  46.00 cm TL male/unsexed  Found in the Mekong River. 
Syngnathidae Ichthyocampus carce (Hamilton, 1822) Fr native  Trey krawpoeu (Khmer)  15.00 cm male/unsexed  Known from the Mekong basin. 
Pristigasteridae Ilisha megaloptera (Swainson, 1838) Fr, Br, M native  Trey phneik thom (Khmer)  36.50 cm SL male/unsexed  Likely to occur in the Mekong basin (Ref. 12693). Also Ref. 7050. 
Cyprinidae Incisilabeo behri (Fowler, 1937) Fr native  Trey pava mook pee (Khmer)  60.00 cm TL male/unsexed  Known from upland reaches of Mekong (Ref. 12693). Also Ref. 43281. 
Indostomidae Indostomus paradoxus Prashad & Mukerji, 1929 Fr native   3.00 cm SL male/unsexed  Occurs in the Mekong River (Ref. 12693). Found in Beng Kebal Damrey (Ref. 36654). 
Indostomidae Indostomus spinosus Britz & Kottelat, 1999 Fr native   3.00 cm SL male/unsexed  Known from the Mekong basin (Ref. 43281). 
Sciaenidae Johnius borneensis (Bleeker, 1851) Fr, Br, M native   34.80 cm TL male/unsexed   
Ariidae Ketengus typus Bleeker, 1846 Fr native  Trey kaok (Khmer)  25.00 cm TL male/unsexed  Occurs in the Mekong basin. 
Siluridae Kryptopterus bicirrhis (Valenciennes, 1840) Fr native  Trey kes prak (Khmer)  15.00 cm SL male/unsexed  Found in the Mekong basin (Ref. 27732) and Tuk Sap (Ref. 36654). 
Siluridae Kryptopterus cheveyi Durand, 1940 Fr, Fi native  Trey kamplieu snoeung (Khmer)  35.00 cm TL male/unsexed  Known from the Mekong basin (Ref. 12693), Tonlé Sap and Kaskos (Ref. 36654). Also found in Lake Tonle Sap near Siem Reap (Ref. 45353). Several samples from the Stung Treng market had their stomachs projecting into their mouths caused by explosives being used by fishermen (Ref. 12693). Also Ref. 27732, 36662, 50582. 
Siluridae Kryptopterus geminus Ng, 2003 Fr, Fi native  Trey kamphliev (Khmer), Kamphliev (Khmer), Trey kamplieu khlanh (Khmer), Trey kompliev (Khmer)  17.06 cm SL male/unsexed  Known from the Mekong River drainage (Ref. 50583). Found in the Great Lake, Tonlé Sap (Ref. 36654) and Sangke river, Battambang province (Ref. 41486). Also Ref. 27732, 33813, 36651, 36686, 37772. 
Siluridae Kryptopterus limpok (Bleeker, 1852) Fr, Fi native  Trey kes prak (Khmer)  26.00 cm SL male/unsexed  Found in the Mekong River (Ref. 12693). Also Ref. 43281. 
Siluridae Kryptopterus paraschilbeides Ng, 2003 Fr native   8.31 cm SL male/unsexed  Known from the Mekong River.  No picture yet.
Siluridae Kryptopterus schilbeides (Bleeker, 1858) Fr, Fi native  Trey kamplieu (Khmer)  12.00 cm TL male/unsexed  Known from the Mekong basin. Also Ref. 36662. 
Cyprinidae Labeo barbatulus (Sauvage, 1878) Fr native   30.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 43281). 
Cyprinidae Labeo chrysophekadion (Bleeker, 1849) Fr native  Kaek (Khmer), Trey kaek (Khmer), Trey kahêk (Khmer) common (usually seen) 90.00 cm TL male/unsexed  Known from the Mekong basin (Ref. 12693, 27732). Found in the Tonle Sap river and Great Lake (Ref. 36651), Prek Krauchmar and Battembang (Ref. 36654). Undertakes upstream migration from October to March and dowstream migration from March to August (Ref. 37770). Also Ref. 7050, 36662, 36686, 33813, 43281. 
Cyprinidae Labeo dyocheilus (McClelland, 1839) Fr native  Trey pruol kmor (Khmer), Pa sa-y (Khmer), Pa va (Khmer), Trey para (Khmer)  90.00 cm TL male/unsexed  Known from Tonlé Sap, Sékong at Stung Treng and rapids of Sambor (Ref. 36654). 
Cyprinidae Labeo erythropterus Valenciennes, 1842 Fr native  Trey kuol chek (Khmer), Trey pawa mook moi (Khmer), Trey pruol thmor (Khmer)  70.00 cm SL male/unsexed  Known from the Mekong basin. Typically found in fairly fast currents, although it is found in the seasonally sluggish Tonlé Sap (Ref. 12693). Also Ref. 36662, 36686. 
Cyprinidae Labeo pierrei (Sauvage, 1880) Fr native   80.00 cm SL male/unsexed  Known from Kraité (Ref. 36654). Also Ref. 43281. 
Cyprinidae Labeo rohita (Hamilton, 1822) Fr introduced   200 cm TL male/unsexed   
Cyprinidae Labeo yunnanensis Chaudhuri, 1911 Fr native   49.00 cm SL male/unsexed  Occurs in the Mekong basin. 
Cyprinidae Labiobarbus leptocheilus (Valenciennes, 1842) Fr, Fi native  Trey khnawng veng (Khmer), Trey ach kok (Khmer), Trey eteok (Khmer), Trey lenh (Khmer)  30.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 12693, 7424). Found in Tonlé Sap, Stung Treng, O Po Kampon (Ref. 36654) and Great Lake (Ref. 33813). Also Ref. 27732, 36662, 43281, 45353. 
Cyprinidae Labiobarbus lineatus (Sauvage, 1878) Fr native   15.50 cm TL male/unsexed  Known from Tonlé Sap drainage (Ref. 56231). 
Cyprinidae Labiobarbus siamensis (Sauvage, 1881) Fr native  Archkok (Khmer), Trey ach kok (Khmer)  22.00 cm TL male/unsexed  Known from the Mekong basin (Ref. 7424). Found around the Tonle Sap river and Great Lake (Ref. 36651). Occurs at midwater to bottom of streams (Ref. 36686). Also Ref. 36662, 33813, 43281. 
Ailiidae Laides longibarbis (Fowler, 1934) Fr native  Trey chhwiet prak (Khmer)  14.20 cm SL male/unsexed  Also Ref. 12693. 
Latidae Lates calcarifer (Bloch, 1790) Fr, Br, M native  Trey spong (Khmer), Cá vurot (Vietnamese)  200 cm TL male/unsexed  Occurs in the Mekong delta and tidal reaches of the Mekong (Ref. 12693). Known from Tonlé Sap (Ref. 36654). 
Danionidae Laubuka caeruleostigmata Smith, 1931 Fr native   7.00 cm SL male/unsexed  Found in the Mekong basin (Ref. 12693). Occurs in Stung Sen (Ref. 36654). A common resident of the flooded forest in the lower Mekong in the early 1050s, but is now listed as rare by the IUCN (Ref. 12693). Also Ref. 43281. 
Danionidae Laubuka laubuca (Hamilton, 1822) Fr native   10.54 cm TL male/unsexed  Occurs in the Mekong basin (Ref. 12693). Known from Phnom Penh (Ref. 36654). Also Ref. 43281. 
Leiognathidae Leiognathus equula (Forsskål, 1775) Fr, Br native  Trey sambow hear (Khmer)  28.00 cm TL male/unsexed  Found in the freshwater tidal zone of the Mekong delta and is likely to be found at the upper edge of the tidal zone in Cambodia. 
Cobitidae Lepidocephalichthys birmanicus (Rendahl, 1948) Fr native   11.00 cm male/unsexed  Known from the Mekong basin. Recorded from a small tributary of the Se San. 
Cobitidae Lepidocephalichthys hasselti (Valenciennes, 1846) Fr native   6.00 cm SL male/unsexed  Known from the Mekong basin. Also Ref. 7050, 43281. 
Leptobarbidae Leptobarbus hoevenii (Bleeker, 1851) Fr, Fi, Aq native  Pror loung (Khmer), Chroleong (Khmer), Pralung (Khmer), Prolung (Khmer), Trey chrålang (Khmer), Trey chrawlang (Khmer), Trey knuoch (Khmer), Trey prâloung (Khmer), Trey pralung (Khmer), Trey prolung (Khmer), Trey prorlung (Khmer) fairly common (chances are about 50%) 100.00 cm SL male/unsexed  A migratory species occurring in the Mekong basin (Ref. 37772). Found around the Tonle Sap river and Great Lake (Ref. 36651), Mae Khong at Phum Rey Shsach (Ref. 36654). Also Ref. 3902, 36662, 33813, 43281. 
Cyprinidae Lobocheilos cryptopogon (Fowler, 1935) Fr native  Trey riel awng kam (Khmer)  15.00 cm TL male/unsexed  Found in Tonle Sap and Great Lake (Ref. 33813) 
Cyprinidae Lobocheilos davisi (Fowler, 1937) Fr native  occasional (usually not seen) 9.00 cm TL male/unsexed  Found in the Mekong River. 
Cyprinidae Lobocheilos delacouri (Pellegrin & Fang, 1940) Fr native   12.00 cm SL male/unsexed  Found in the Mekong River. 
Cyprinidae Lobocheilos gracilis (Fowler, 1937) Fr native   24.00 cm TL male/unsexed  Found in the Mekong River. Large enough to be marketed fresh, but not yet seen in markets. 
Cyprinidae Lobocheilos melanotaenia (Fowler, 1935) Fr native  Trey changwa ronoung (Khmer)  20.00 cm SL male/unsexed  Found in the Mekong basin (Ref. 12693), Battembang (Ref. 36654) and Great Lake (Ref.33813). Returns to Tonle Sap from the floodplains beginning in November with numbers peaking in December (Ref. 36686). Also Ref. 43281. 
Cyprinidae Lobocheilos rhabdoura (Fowler, 1934) Fr native   22.00 cm SL male/unsexed  Occurs in streams of the Mekong basin (Ref. 12693). Found in Battembang, km 224 on the road from Kratié to Saigon (Ref. 36654). Also Ref. 43281. 
Xenocyprididae Longiculter siahi Fowler, 1937 Fr native  Trey slak russey (Khmer)  20.00 cm SL male/unsexed  Found in Tonlé Sap (Ref. 36654). 
Danionidae Luciosoma bleekeri Steindachner, 1878 Fr native  Trey bang kouy (Khmer), Trey Dang Dau (Khmer), Trey daungdiro (Khmer), Trey dawng dao (Khmer)  25.00 cm SL male/unsexed  Found in the Mekong basin (Ref. 12693), Stung Treng, Srepok, Tonlé Sap and Battembang (Ref. 36654). Also Ref. 36662, 43281. 
Danionidae Luciosoma setigerum (Valenciennes, 1842) Fr native  Chang wa ronaung (Khmer), Trey changwa ronaung (Khmer), Trey dawng dao (Khmer)  26.00 cm SL male/unsexed  Known from the Mekong basin (Ref. 12693). Found around the Tonle Sap river and Great Lake (Ref. 36651). Occurs in surface of flowing waters (Ref. 36686). Also Ref. 33813, 43281. 
Lutjanidae Lutjanus argentimaculatus (Forsskål, 1775) Fr, Br, M native  Cá huong (Vietnamese)  150 cm TL male/unsexed   
Engraulidae Lycothrissa crocodilus (Bleeker, 1850) Fr, Br native  Chhmar (Khmer), Trey chhmar kror poeu (Khmer), Trey chmar (Khmer)  30.00 cm SL male/unsexed  Known from the Mekong delta up to Tonlé Sap and the Great Lake (Ref. 12693). Its numbers remain uniform in the Tonlé Sap throughout the fishing season (Ref. 12693). At Kandal, it migrates upstream when the water recedes, just before the full moon (Ref. 37770). Also Ref. 36651, 36654, 36662, 33813, 45353. 
Xenocyprididae Macrochirichthys macrochirus (Valenciennes, 1844) Fr native  Dangkhteng (Khmer), Dang kteng (Khmer), Dangdao (Khmer), Trey dang khténg (Khmer), Trey dang ktong (Khmer), Trey dangkteng (Khmer), Trey dankhténg (Khmer) abundant (always seen in some numbers) 100.00 cm TL male/unsexed  Known from the Mekong basin; abundant in lower Mekong in October (Ref.12693). Found around the Tonle Sap river and Great Lake (Ref. 36651), Prek Phnan (Ref. 36654). Occurs at medium to shallow depths in large rivers and lakes (Ref. 36686). Also Ref. 3902, 33813, 43281. 
Mastacembelidae Macrognathus circumcinctus (Hora, 1924) Fr native  Trey khchoeung (Khmer)  28.60 cm TL male/unsexed  Known from Réam, Stung O Krien, Sianoukville, Stung Tong Hong, Bang Kro and Tonlé Sap (Ref. 36654). 
Mastacembelidae Macrognathus maculatus (Cuvier, 1832) Fr native  Trey kchoeung (Khmer)  28.00 cm TL male/unsexed  Found in Tonle Sap and Great Lake (Ref. 33813). 
Mastacembelidae Macrognathus semiocellatus Roberts, 1986 Fr native   19.20 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 12693). Also found in Lake Tonle Sap near Siem Reap (Ref. 45353). Also Ref. 27732. 
Mastacembelidae Macrognathus siamensis (Günther, 1861) Fr native  Trey chhlonh chhnoht (Khmer), Chhlong (Khmer), Trey chlaunh (Khmer)  30.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 27732). Found in Kampong Réat, Kompong Cham (Ref. 36654), Tonle Sap river and Great Lake= Lake Tonle Sap (Ref. 33813). Also Ref. 39392, 45353, 83418. 
Mastacembelidae Macrognathus taeniagaster (Fowler, 1935) Fr native  Trey kchoeung (Khmer) abundant (always seen in some numbers) 22.00 cm TL male/unsexed  Known from the Mekong basin (Ref. 12693), Tonle Sap and Great Lake (Ref. 33813). 
Osphronemidae Macropodus opercularis (Linnaeus, 1758) Fr native   6.70 cm SL male/unsexed   
Mastacembelidae Mastacembelus armatus (Lacepède, 1800) Fr native  Trey kchoeung (Khmer), Kchung (Khmer), Trey chhlaunh (Khmer), Trey khchoeung (Khmer)  90.00 cm TL male/unsexed  Occurs in the Mekong (Ref. 27732). Known from Réam, Stung O Krien, Srépok, Stung Santrea, Battembang (Ref. 36654), Tonle Sap and Great Lake (Ref. 33813). Rarely found south to Kratie (Ref. 37770). 
Mastacembelidae Mastacembelus erythrotaenia Bleeker, 1850 Fr native  Trey kchoeung phka (Khmer), Trey khcoeung (Khmer)  100.00 cm TL male/unsexed  Found in Great Lake and Tonle Sap (Ref. 33813). 
Mastacembelidae Mastacembelus favus Hora, 1924 Fr native  Trey kchoeung (Khmer) common (usually seen) 70.00 cm SL male/unsexed  Known from t he Mekong basin (Ref. 12693). Found in Great Lake and Tonle Sap river (Ref. 33813). 
Megalopidae Megalops cyprinoides (Broussonet, 1782) Fr, Br, M native   150 cm TL male/unsexed  Found in the Mekong basin (Ref. 12693). 
Cyprinidae Mekongina erythrospila Fowler, 1937 Fr, Fi native  Trey pase ee (Khmer), Pa ré-y (Khmer)  45.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 12693). Known from Tonlé Sap, Mae Khong at Stung Treng (Ref. 36654). A highly desired food fish in northern Cambodia (Ref. 12693). Also Ref. 27732, 43281. 
Siluridae Micronema hexapterus (Bleeker, 1851) Fr, Fi native  Trey kamplieu (Khmer)  24.00 cm TL male/unsexed   
Siluridae Micronema moorei (Smith, 1945) Fr, Fi native  Trey kamplieu (Khmer)  24.00 cm TL male/unsexed  Known from the Mekong River. 
Syngnathidae Microphis brachyurus (Bleeker, 1854) Fr native  Trey krawpoeu (Khmer)  22.00 cm SL male/unsexed  Known from the Mekong. 
Ehiravidae Minyclupeoides dentibranchialus Roberts, 2008 Fr native   2.25 cm SL male/unsexed  Type locality, Takeo-Angkor Borei flood plain near Takeo, Mekong Basin, ZRC 50699 (holotype of Minyclupeoides dentibranchialus, 2.13 cm SL) (Ref. 75047).  No picture yet.
Cobitidae Misgurnus anguillicaudatus (Cantor, 1842) Fr native  Cá diét (Vietnamese)  28.00 cm SL male/unsexed   
Monodactylidae Monodactylus argenteus (Linnaeus, 1758) Fr, Br, M native  occasional (usually not seen) 27.00 cm SL male/unsexed   
Synbranchidae Monopterus albus (Zuiew, 1793) Fr, Br native  Antong (Khmer), Andtong beng (Khmer)  100.00 cm SL male/unsexed  Known from the Mekong basin (Ref. 27732) and Lake Tonle Sap near Siem Reap (Ref. 45353). Occurs in Ream, Angkor and Bokor (Ref. 36654). Found along the bottom often in holes in standing water habitats (Ref. 36686). Also Ref. 3902, 43281. 
Gobiidae Mugilogobius chulae (Smith, 1932) Fr native   4.00 cm TL male/unsexed   
Cyprinidae Mystacoleucus atridorsalis Fowler, 1937 Fr native   8.00 cm SL male/unsexed  Found in the Mekong basin. 
Cyprinidae Mystacoleucus ectypus Kottelat, 2000 Fr native   8.00 cm SL male/unsexed  Occurs in the Mekong basin. 
Cyprinidae Mystacoleucus marginatus (Valenciennes, 1842) Fr, Fi native  Trey tim proek (Khmer), Trey tim proeak (Khmer)  20.00 cm TL male/unsexed  Occurs in the Mekong basin (Ref. 12693, 27732). Found in Stung Santrea, Stung Chihreng, Tonlé Sap, Stung O Krien and Battembang (Ref. 36654). Also Ref. 43281. 
Bagridae Mystus albolineatus Roberts, 1994 Fr native  Trey kanchos bay (Khmer)  35.00 cm SL male/unsexed  Known from the lower Mekong (Ref. 10418). Found in Tonle Sap river and Great Lake (Ref. 33813). Museum: Mekong Basin, CAS 81547. Also Ref. 12693. 
Bagridae Mystus atrifasciatus Fowler, 1937 Fr, Fi native  Trey kanchos chhnoht (Khmer)  15.00 cm SL male/unsexed  Known from the Mekong basin. Also Ref. 27732. 
Bagridae Mystus bocourti (Bleeker, 1864) Fr native  Kanh chos kdong (Khmer), Trey kanchos kdaung (Khmer), Trey Konchos Kdaung (Khmer)  24.00 cm SL male/unsexed  Known from the Mekong basin (Ref. 12693). Found in Tonlé Sap, near the Great Lake (Ref. 36651). Also occurs in Lake Tonle Sap (=Great Lake) near Siem Reap (Ref. 45353). Also Ref. 12693, 36651, 36654, 36662. 
Bagridae Mystus multiradiatus Roberts, 1992 Fr native  Trey kanchos chhnoht (Khmer)  12.80 cm SL male/unsexed  Known from the Mekong basin. Found in Tonlé Sap river in Siem Reap province (Ref. 36662) and Great Lake (Ref. 33813). Also Ref. 45353. 
Bagridae Mystus mysticetus Roberts, 1992 Fr native  Trey kanchos chhnoht (Khmer) common (usually seen) 13.00 cm SL male/unsexed  Known from the Mekong basin (Ref. 12693). Found in Tonle Sap and Great Lake (Ref. 33813). Also Ref. 36662, 45353. 
Bagridae Mystus nigriceps (Valenciennes, 1840) Fr native  Trey kanchos (Khmer)  30.00 cm TL male/unsexed  Known from the Mekong basin. Found in Tonlé Sap (Ref. 36654). 
Bagridae Mystus rhegma Fowler, 1935 Fr native  Trey kanchos (Khmer)  12.00 cm SL male/unsexed  Known from the lower Mekong. Museum: Mekong basin, Stung Treng market, CAS 81546. Also Ref. 43281. 
Bagridae Mystus singaringan (Bleeker, 1846) Fr native  Trey kanchos (Khmer)  30.00 cm SL male/unsexed  Found in middle Mekong (Ref. 12693). Museum: O Champha, CAS 81550. Also Ref. 10418, 27732. 
Bagridae Mystus velifer Ng, 2012 Fr native   14.48 cm SL male/unsexed  Known from Tonlé Sap (Ref. 91083).  No picture yet.
Bagridae Mystus wolffii (Bleeker, 1851) Fr native  Trey kanchos (Khmer)  20.00 cm TL male/unsexed  Known from the Mekong basin (Ref. 12693). Found in Tonlé Sap and Great Lake (Ref. 33813, 36654). Also Ref. 45353. 
Nandidae Nandus nandus (Hamilton, 1822) Fr native  Trey khlar (Khmer)  20.00 cm TL male/unsexed   
Nandidae Nandus nebulosus (Gray, 1835) Fr native  Trey khla (Khmer)  12.00 cm TL male/unsexed  Found in Tonlé Sap, Beng Kebal Damrey, Tuk Sap and Réam (Ref. 36654). 
Nandidae Nandus oxyrhynchus Ng, Vidthayanon & Ng, 1996 Fr native   6.90 cm SL male/unsexed  Found in the Mekong basin (Ref. 43281). 
Nemacheilidae Nemacheilus longistriatus Kottelat, 1990 Fr native   12.50 cm SL male/unsexed  Found in the Mekong River. 
Nemacheilidae Nemacheilus masyae Smith, 1933 Fr native   13.50 cm SL male/unsexed  May also be found on the Mekong side of the Cardamom mountains in northwest Cambodia. 
Nemacheilidae Nemacheilus pallidus Kottelat, 1990 Fr native   14.00 cm SL male/unsexed  Occurs in the Mekong River. (Ref. 12693) Also found in Lake Tonle Sap near Siem Reap (Ref. 45353). Also Ref. 27732, 39226. 
Nemacheilidae Nemacheilus platiceps Kottelat, 1990 Fr native   6.10 cm SL male/unsexed  Known from the lower Mekong basin. Has been found in Srepok and Se San in northern Cambodia and also between Phnom Penh and Sihanoukville. Also Ref. 27732, 39226, 26580. 
Dorosomatidae Nematalosa nasus (Bloch, 1795) Fr, Br, M native   27.20 cm TL male/unsexed  May be found in the Mekong near the Viet Nam border (Ref. 12693). 
Cyprinidae Neobarynotus microlepis (Bleeker, 1851) Fr native  Trey angkat prak (Khmer), Trey ancat prac (Khmer)  40.00 cm TL male/unsexed  Occurs in th Mekong basin (Ref. 12693). Known from Phnom Penh (Ref. 36654). 
Cyprinidae Neolissochilus soroides (Duncker, 1904) Fr native   45.00 cm TL male/unsexed  Known from the Cardamon Mountains. 
Notopteridae Notopterus notopterus (Pallas, 1769) Fr, Fi native  Trey slat (Khmer), Slat (Khmer)  60.00 cm SL male/unsexed  Known from the Mekong basin (Ref. 12693). Found below the Khoné Falls to Tonlé Sap and the Great Lake (Ref. 37772), Phnom Penh and Réam (Ref. 36654), Sangke river, Battambang province (Ref. 41486). More common in permanent lakes than in the main Mekong River channel (Ref. 37770). Also Ref. 3902, 36662, 36686, 33813, 45353. 
Gobiidae Oligolepis acutipennis (Valenciennes, 1837) Fr native   15.00 cm TL male/unsexed  Common in the Mekong delta, and may also occur upstream. 
Siluridae Ompok eugeneiatus (Vaillant, 1893) Fr native  Trey ta aun (Khmer) scarce (very unlikely) 16.50 cm TL male/unsexed  Found in Tonle Sap river and Great Lake (Ref. 33813).  No picture yet.
Siluridae Ompok hypophthalmus (Bleeker, 1846) Fr native  Ta aun (Khmer), Trey ta aun (Khmer)  30.00 cm SL male/unsexed  Known from the Mekong basin (Ref. 12693). Found around the Tonle Sap river, Great Lake (Ref. 36651), Areyksat, Peam Chikang, Tonlé Sap and Takéo (Ref. 36654). Also Ref. 7050, 33813. 
Siluridae Ompok pinnatus Ng, 2003 Fr native   10.00 cm TL male/unsexed  Type locality, Fishing lot 9 in second channel east of town, Tonle Sap at Kompong Chhnang (Ref. 50838). 
Siluridae Ompok siluroides Lacepède, 1803 Fr native  Trey krormorm (Khmer), Trey krainam (Khmer), Trey taon (Khmer)  21.44 cm SL male/unsexed  Known from the Mekong basin. Found in Sékong at Stung Treng, Tonlé Sap, Réam, Angkor, Phnom Penh (Ref. 36654) and Great Lake = Lake Tonlé Sap (Ref. 33813). Also Ref. 45353. 
Siluridae Ompok urbaini (Fang & Chaux, 1949) Fr native   18.10 cm SL male/unsexed  Known from Tonle Sap (Ref. 52514). 
Cyprinidae Onychostoma meridionale Kottelat, 1998 Fr native   14.00 cm SL male/unsexed    No picture yet.
Butidae Ophiocara porocephala (Valenciennes, 1837) Fr, Br native   34.00 cm TL male/unsexed  Known from Tonlé Sap (Ref. 36654). 
Synbranchidae Ophisternon bengalense McClelland, 1844 Fr native  Antong (Khmer)  100.00 cm TL male/unsexed  Known from the Mekong basin. Found along the bottom of standing water habitats (Ref. 36686). 
Danionidae Opsarius koratensis (Smith, 1931) Fr native  Trey changwa (Khmer)  16.00 cm TL male/unsexed  Occurs in the Mekong basin (Ref. 12693). Found in Stung Santrea and Battembang (Ref. 36654). Also Ref. 27732, 43281. 
Danionidae Opsarius pulchellus (Smith, 1931) Fr native  Trey changwa (Khmer)  11.00 cm SL male/unsexed  Found in the Tonle Sap River (Ref. 33813). Reported likely to occur in the Mekong basin (Ref. 12693). 
Cichlidae Oreochromis mossambicus (Peters, 1852) Fr, Br, Aq introduced  Trey tilapia khmao (Khmer), Carophee (Khmer)  39.00 cm SL male/unsexed  Known from the Mekong basin (Ref. 12228). Cultured in rice fields in Svay Rieng (Ref. 121504). Also Ref. 7306, 26920. 
Cichlidae Oreochromis niloticus (Linnaeus, 1758) Fr, Fi, Aq introduced  Trey tilapia chhnoht (Khmer)  60.00 cm SL male/unsexed  Known from the Mekong basin (Ref. 12228). Cultured in rice fields in Svay Rieng (Ref. 121504). . 
Adrianichthyidae Oryzias mekongensis Uwa & Magtoon, 1986 Fr native   3.00 cm TL male/unsexed  Known from the Mekong basin. Also Ref. 43281. 
Adrianichthyidae Oryzias minutillus Smith, 1945 Fr native   2.00 cm TL male/unsexed  Found in the lower Mekong basin. Also Ref. 27139, 43281. 
Osphronemidae Osphronemus exodon Roberts, 1994 Fr, Fi native  Trey trochiek damrey (Khmer), Trey romeas (Khmer), Trey romir (Khmer)  60.00 cm SL male/unsexed  Occurs in the Mekong basin. Not known from the Great Lake (Ref. 12693). Found in Stung Treng in northeastern Cambodia and in Se San - Se Khone, the largest tributary of the Cambodian Mekong River (Ref. 31465). Sold fresh in the northern Cambodia. Also Ref. 27732. 
Osphronemidae Osphronemus goramy Lacepède, 1801 Fr, Fi native  Trey trochiek damrey (Khmer)  70.00 cm SL male/unsexed  Known from Mae Khong, Sekong at Stung Treng and Srepok (Ref. 36654). Found in the lower Mekong basin, but occurrence is doubtful (Ref. 31465). Individuals introduced from VietNam in 2000, have not established (Ref. 58859). Also Ref. 3902. 
Cyprinidae Osteochilus enneaporos (Bleeker, 1852) Fr native  Trey chhang vote (Khmer)  23.00 cm SL male/unsexed  Known from the Mekong basin. 
Cyprinidae Osteochilus lini Fowler, 1935 Fr native  Trey kros (Khmer)  15.00 cm SL male/unsexed  Known from the Mekong River (Ref. 12693). Also found in Lake Tonle Sap near Siem Reap (Ref. 45353). 
Cyprinidae Osteochilus melanopleura (Bleeker, 1852) Fr, Fi native  Krom (Khmer), Trey krom (Khmer), Trey kroum (Khmer), Trey krum (Khmer) common (usually seen) 60.00 cm SL male/unsexed  Occurs in Mekong River (Ref. 27732). Found around the Tonle Sap river, Great Lake (Ref. 36651) and Sangke river, Battambang province (Ref. 41486). Used to make prahoc (Ref. 36662). Occurs in middle reaches and swamps (Ref. 36686). Also Ref. 2091, 36654, 33813, 45353. 
Cyprinidae Osteochilus microcephalus (Valenciennes, 1842) Fr native  Trey kros (Khmer), Trey krom (Khmer), Trey kroum (Khmer), Trey kzos (Khmer)  24.00 cm SL male/unsexed  Known from the Mekong basin. Occurs in Srépok, Tonlé Sap, Battembang (Ref. 36654). Also Ref. 36662, 43281. 
Cyprinidae Osteochilus schlegelii (Bleeker, 1851) Fr native  Loloksor (Khmer), Lolok sor (Khmer), Trey lolok sor (Khmer), Trey rolok sar (Khmer) scarce (very unlikely) 40.00 cm SL male/unsexed  Known from the Mekong basin. Found around the Tonle Sap river and Great Lake (Ref. 33813, 36651). 
Cyprinidae Osteochilus vittatus (Valenciennes, 1842) Fr native  Trey kros (Khmer), Kros (Khmer), Trey krom (Khmer), Trey Kroum (Khmer), Trey rolok sar (Khmer) common (usually seen) 32.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 12693, 27732), around the Tonle Sap and Great Lake (Ref. 33813), Beng Kebal Damrey, Réam, Angkor (Ref. 36654), Sangke river, Battambang province (Ref. 41486). Also Ref. 2073, 27732, 36651, 36662. 36686, 43281, 45353. 
Cyprinidae Osteochilus waandersii (Bleeker, 1853) Fr native  Trey kros (Khmer)  27.60 cm TL male/unsexed  Occurs in the Mekong basin (Ref. 27732) and Battembang (Ref. 36654). Also Ref. 7050, 43281. 
Oxudercidae Oxuderces dentatus Eydoux & Souleyet, 1850 Fr native   10.00 cm TL male/unsexed  Occurs in the Mekong. 
Butidae Oxyeleotris marmorata (Bleeker, 1852) Fr, Br, Fi native  Trey damrey (Khmer), Damrey (Khmer), Trey damrei (Khmer)  65.00 cm SL male/unsexed  Occurs in the Mekong basin. Often marketed fresh in northern Cambodia, less commonly so near Phnom Penh (Ref. 12693). Known in Tonlé Sap, Stung O Krien, Kirikum, Stung Sen (Ref. 36654) and Great Lake (Ref. 33813). Occurs in sluggish and still standing waters (Ref. 36686). Also Ref. 3902, 36662, 37772. 
Xenocyprididae Oxygaster anomalura Van Hasselt, 1823 Fr native  Trey slak russey (Khmer)  20.00 cm SL male/unsexed  Occurs in the Mekong River. 
Xenocyprididae Oxygaster pointoni (Fowler, 1934) Fr native  Trey slak russey (Khmer)  15.50 cm SL male/unsexed  Found in the Mekong River. 
Pangasiidae Pangasianodon gigas Chevey, 1931 Fr, Fi, Pr native  Trey reach (Khmer), Trey réach (Khmer), Trey Riech (Khmer) scarce (very unlikely) 300 cm TL male/unsexed ;235 cm SL female  Occurs in Mekong river system (Ref. 12693). Found in Phnom Penh (Ref. 33021), Tonlé Sap, Great Lake (Ref. 36654, 36686). Recorded from Kratie to Stung Treng (Ref. 37770). Protected by law since 1971 (Ref. 2682). Also Ref. 3902, 7432, 37772. 
Pangasiidae Pangasianodon hypophthalmus (Sauvage, 1878) Fr, Fi, Aq native  Trey pra (Khmer), Pra (Khmer) occasional (usually not seen) 130 cm SL male/unsexed  Known from the Mekong basin. Found in Grand Lac (Ref. 36654), Tonle Sap River (Ref. 33813) and Lake Tonlé Sap near Siem Reap (Ref. 45353). South of the Khone Falls, this species migrates upstream from October to February, peaking in November-December and extending into April from Kandal Province to Stung Treng (Ref. 37770). Migration occurs during full moon at Kratie and Kompong Cham (Ref. 37770). Migrates downstream from May to August from Stung Treng to Kandal and further into the Mekong Delta in Viet Nam, at least to Cai Be (Ref. 37770). This downstream migration is both a spawning and a trophic migration eventually bringing the fish onto floodplain areas during the flood season (Ref. 37770). Exclusively fished by explosives in northern Cambodia (Ref. 12693). Also Ref. 37772. 
Pangasiidae Pangasius bocourti Sauvage, 1880 Fr native  Trey pra kchau (Khmer), Keir (Khmer)  120 cm SL male/unsexed  Known from the Mekong basin (Ref. 12693). Found in Tonle Sap (Ref. 1632). Below the Khone Falls, it undertakes upstream migration beginning in November when the water level within the river decreases and continues well into the dry seaon, at least until February. In the late dry season, or the start of the monsoon season, it migrates downstream from the Khone Falls to the Mekong Delta (Ref. 37770). Also Ref. 36654, 41485. 
Pangasiidae Pangasius conchophilus Roberts & Vidthayanon, 1991 Fr native  Trey ke (Khmer), Pra ke (Khmer), Trey pra ke (Khmer) occasional (usually not seen) 120 cm SL male/unsexed  Known from the Mekong basin. Migrates downstream from Khone Falls to Kandal near Phnom Penh from March to August (Ref. 37770). Juveniles appear from several places along this stretch. Fish of 2 cm occur in June-August at Kratie and in July-August at Kandal (Ref. 37770). Also Ref. 7432, 36686, 37770. 
Pangasiidae Pangasius djambal Bleeker, 1846 Fr native  Trey pra (Khmer)  90.00 cm TL male/unsexed  Known from the Mekong basin (Ref. 37770). Downstream migration occurs over an eight months period, mainly during June-July while upstream migration takes place mainly during December-February (Ref. 37770). Small juveniles (2-4 cm) have been encountered from Kratie to Kompong Cham from May to November (Ref. 37770). 
Pangasiidae Pangasius elongatus Pouyaud, Gustiano & Teugels, 2002 Fr native  Trey chhwiet (Khmer)  28.20 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 12693). Observed in small numbers in non-reproductive condition at Stung Treng in February 1994 (Ref. 10431). Below the Khone Falls, this species migrates upstream from the Kandal Province to the Khone Falls, mainly triggered by receding water levels at the end of the flood season (Ref. 37770). From Thalabowirrat in Stung Treng Province to the Mekong Delta, a downstream reproductive migrations occur at the onset of the flood season, triggered by a combination of early rainfall and rising water levels (Ref. 37770). Also Ref. 36654.  No picture yet.
Pangasiidae Pangasius krempfi Fang & Chaux, 1949 Fr native  Trey pra (Khmer), Iveir (Khmer), Ses (Khmer), Trey bong lao (Khmer), Tro ses (Khmer)  120 cm SL male/unsexed  Known from the Mekong. At Thalabovirrat near the Khone Falls, it migrates upstream in May-June and from Stung Treng to Kompong Cham Province, this fish migrate downstream during this period (Ref. 37770). Reported to migrate upstream in Kandal Province, near Phnom Penh from Viet Nam during March-May, peaking up to 5 days and involving sizes between 40 to 90 cm (Ref. 37770). Migrations below the Khone Falls are triggered by the increase of water levels (Ref. 37770). Also Ref. 36654. 
Pangasiidae Pangasius larnaudii Bocourt, 1866 Fr, Fi, Aq native  Trey po (Khmer), Po (Khmer), Trey Po Thmau Trâchiek (Khmer) occasional (usually not seen) 130 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 12693, 27732). Found below the Khone Falls to the Tonle Sap River, the Great Lake (Ref. 37772). Reared in ponds as well as in weirs around the Great Lake (Ref. 36686). May be put on ice around the Great Lake for shipment to Thailand (Ref. 12693). Also Ref. 36654, 33813. 
Pangasiidae Pangasius macronema Bleeker, 1850 Fr, Fi native  Trey chhwiet (Khmer), Chhweat (Khmer) abundant (always seen in some numbers) 30.00 cm SL male/unsexed  Known from the Mekong basin (Ref. 37772) and Lake Tonle Sap near Siem Reap (Ref. 45353). May be found in Tonle Sap river (Ref. 36686). Fishermen used explosives to target this species on the Cambodian side of the border across Ban Weun Kahm (Ref. 12369). Generally present throughout the year in varying abundance, more abundant during the migration period (Ref. 37770). Reported to migrate upstream from November to January/February and downstream in May-June (Ref. 37770). Also Ref. 12693, 33813, 36654. 
Pangasiidae Pangasius nasutus (Bleeker, 1863) Fr native  Trey prakchouv (Khmer)  90.00 cm TL male/unsexed  May be found in Great Lake and Tonle Sap river (Ref. 36686). 
Pangasiidae Pangasius pangasius (Hamilton, 1822) Fr, Aq introduced  Trey pra (Khmer)  300 cm SL male/unsexed  Also Ref. 3902, 36662. 
Pangasiidae Pangasius sanitwongsei Smith, 1931 Fr, Fi native  Trey po pruy (Khmer) scarce (very unlikely) 300 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 12693). Rare in Great Lake and Tonle Sap river (Ref. 36686). At Kompong Cham to the Khone Falls, this species migrates upstream between October and February when water level recedes and then downstream from June to August when water level rises (Ref. 37770). Also Ref. 3902, 36654, 37772. 
Cobitidae Pangio anguillaris (Vaillant, 1902) Fr native   12.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 13770). Known from Stung O Krien, Srepok, Stung Treng, Battembang and Kompong Reat (Ref. 36654). Also Ref. 27732. 
Cobitidae Pangio myersi (Harry, 1949) Fr native   10.00 cm SL male/unsexed  Known from the Mekong basin (Ref. 43281). 
Cobitidae Pangio oblonga (Valenciennes, 1846) Fr native   8.00 cm TL male/unsexed  Known from the Mekong basin. Also Ref. 7050. 
Tetraodontidae Pao cambodgiensis (Chabanaud, 1923) Fr native   15.30 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 43281). 
Tetraodontidae Pao cochinchinensis (Steindachner, 1866) Fr native  Trey krepot (Khmer)  11.28 cm SL male/unsexed  Known from the Mekong basin (Ref. 43281). Found in Lake Tonle Sap near Siem Reap (Ref. 45353). 
Tetraodontidae Pao leiurus (Bleeker, 1850) Fr native  Trey kampot (Khmer)  16.00 cm male/unsexed  Occur in lower Mekong as far upstream as the Great Lake = Lake Tonle Sap (Ref. 12693). Recorded from Tonlé Sap river, Beng Kebal Damrey and Phnom Penh (Ref. 36654). Also Ref. 45353. 
Gobiidae Papuligobius ocellatus (Fowler, 1937) Fr native   12.00 cm SL male/unsexed  Found in the Mekong basin. 
Nemacheilidae Paracanthocobitis canicula Singer & Page, 2015 Fr native  Houndstooth zipper loach (English)  6.34 cm SL male/unsexed  Found in the lower Mekong basin (Ref. 102002).  No picture yet.
Xenocyprididae Parachela maculicauda (Smith, 1934) Fr native  Trey chanteas phluk (Khmer)  6.00 cm TL male/unsexed  Occurs in the Mekong basin, including tributaries of the Great Lake (Ref. 12693). Found in Spean Tros (Ref. 36654). Also Ref. 33813, 36686. 
Xenocyprididae Parachela oxygastroides (Bleeker, 1852) Fr native  Trey chanteas phluk (Khmer), Trey chantéas phluk (Khmer), Trey chéantéas phluk (Khmer), Trey slek russey (Khmer)  20.00 cm SL male/unsexed  Known from the Mekong River (Ref. 12693, 3902). Found in the Tonlé Sap (Ref. 36654). 
Xenocyprididae Parachela siamensis (Günther, 1868) Fr, Fi native  Trey slak russey (Khmer), Trey chanteas phluk (Khmer), Trey sleek russey (Khmer)  19.00 cm TL male/unsexed  Found in the Mekong River. The most common species of the genus in the Great Lake (Ref. 12693); in Tonlé Sap (Ref. 36654). Also Ref. 27732, 36662, 36686, 43281, 45353. 
Xenocyprididae Parachela williaminae Fowler, 1934 Fr native  Trey chanteas phluk (Khmer) occasional (usually not seen) 12.00 cm SL male/unsexed  Known from the main channel of the Mekong River (Ref. 12693). Found in Great Lake (Ref. 36686). Also Ref. 43281. 
Xenocyprididae Paralaubuca barroni (Fowler, 1934) Fr native  Trey slak russey (Khmer)  15.00 cm SL male/unsexed  Known from the Mekong basin. 
Xenocyprididae Paralaubuca harmandi Sauvage, 1883 Fr native  Trey slak russey (Khmer)  21.90 cm SL male/unsexed  Known from the Mekong River (Ref. 12693). Found in Tonlé Sap (Ref. 36654). Also Ref. 43281. 
Xenocyprididae Paralaubuca riveroi (Fowler, 1935) Fr native  Ch-teasphluk (Khmer), Trey slak russey (Khmer)  18.00 cm SL male/unsexed  Found around the Tonle Sap Great Lake and river (Ref. 36651). Occurs in shallow and medium depths of large rivers (Ref. 36686). 
Xenocyprididae Paralaubuca typus Bleeker, 1864 Fr, Fi native  Trey sloeuk russey (Khmer), Korntors plukh (Khmer), Sleok rusey (Khmer), Sloeuk russey (Khmer), Sluk russey (Khmer), Trey chanteas phluk (Khmer), Trey Kateang Phluk (Khmer), Trey sbay ka (Khmer), Trey slak russey (Khmer), Trey Tong Phluk (Khmer) abundant (always seen in some numbers) 18.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 12693). Found around the Tonle Sap, Great Lake, (Ref. 36651), Sékong, Stung Chihreng and Sré Umbell (Ref. 36654). Undertakes a non-reproductive upstream migration during November to February all the way from Kandal, near Phnom Penh, to the Khone Falls and a reproductive downstream migration from May to July (Ref. 37770). Recorded from market surveys at Stung Treng in February and at Kratie in January-February where this species is considered part of a group of small non-reproductive fish migrating upstream from downriver in January-February (Ref. 37770). Sangke river, Battambang province (Ref. 41486). Also Ref. 27732, 33813, 36662, 36686, 43281. 
Ambassidae Parambassis apogonoides (Bleeker, 1851) Fr native  Trey kanchanh chras thom (Khmer)  10.00 cm SL male/unsexed  Known from the lower Mekong basin in Stung Treng, Tonlé Sap (Ref. 10429) and Great Lake (Ref. 33813). Found in sluggish waters and floodplains (Ref. 36686). Also Ref. 9497. 
Ambassidae Parambassis baculis (Hamilton, 1822) Fr native   7.00 cm TL male/unsexed  Found in Stung Sang, Beng Kebal Damrey, Tonlé Sap and Stung Tong Hong (Ref. 36654). 
Ambassidae Parambassis ranga (Hamilton, 1822) Fr native  Trey kanchanh chras touch (Khmer)  9.50 cm TL male/unsexed  Known from the Mekong basin. Occurs in sluggish and still standing waters. Found in Tonle Sap. (Ref. 36686). 
Ambassidae Parambassis siamensis (Fowler, 1937) Fr native  Kantrang preng (Khmer)  7.50 cm SL male/unsexed  Found in the Mekong basin (Ref. 10429), Kompong Cham (Ref. 36654) and Lake Tonle Sap near Siem Reap (Ref. 45353). Also Ref. 27732, 43281. 
Ambassidae Parambassis wolffii (Bleeker, 1850) Fr native  Kantrang preng (Khmer), Kanchanhchras (Khmer), Trey kantrang preng (Khmer) common (usually seen) 20.00 cm SL male/unsexed  Known from the Mekong basin. Found around the Tonle Sap river, Great Lake = Lake Tonle Sap (Ref. 36651) and Sékong at Stung Treng (Ref. 36654). Occurs in floodplains (Ref. 36686). Also Ref. 33813, 36662, 45353. 
Oxudercidae Periophthalmodon schlosseri (Pallas, 1770) Fr, Br native   27.00 cm TL male/unsexed  Found in the Mekong. 
Siluridae Phalacronotus apogon (Bleeker, 1851) Fr, Fi native  Trey kes (Khmer), Kes (Khmer) occasional (usually not seen) 130 cm SL male/unsexed  Known from the Mekong basin. Found in Great Lake and Tonle Sap river (Ref. 33813). Sold fresh, dried and salted, or placed in ice for shipment to Thailand (Ref. 12693). Also Ref. 36662, 37772, 45353. 
Siluridae Phalacronotus bleekeri (Günther, 1864) Fr, Fi native  Trey kes (Khmer), Trey kés (Khmer)  60.00 cm SL male/unsexed  Occurs in the Mekong basin. Found in Tonlé Sap, Pase Andor, Sékong at Stung Treng (Ref. 36654) and Great Lake (Ref. 33813). Below the Khone Falls, it undertakes lateral migrations followed by a longitudinal movement within the mainstream. At Stung Treng and Kandal Provinces, fish migration is reported to be affected by the lunar cycyle. Species returns to the river from the floodplain and tributaries on, or immediately before, the full moon (Ref. 37770). Sold fresh or put on ice for shipment to Thailand (Ref. 12693). Also Ref. 37772. 
Siluridae Phalacronotus micronemus (Bleeker, 1846) Fr native  Trey kes (Khmer)  50.00 cm SL male/unsexed  Sold fresh or smoked on a skewer. Put on ice around Great Lake for shipment to Thailand (Ref. 12693). Found in Tonle Sap (Ref. 33813). Also Ref. 36686. 
Blenniidae Phenablennius heyligeri (Bleeker, 1859) Fr, Br native   5.30 cm SL male/unsexed   
Phallostethidae Phenacostethus smithi Myers, 1928 Fr, Br native   2.00 cm TL male/unsexed  Occurs in the Mekong basin (Ref. 12693). Found in Beng Tao (Ref. 36654). 
Ophichthidae Pisodonophis boro (Hamilton, 1822) Fr, Br, M native   100.00 cm TL male/unsexed  Found in the Mekong delta and probably in tidally influenced areas of Cambodia (Ref. 12693). Also Ref. 7050. 
Mugilidae Planiliza melinoptera (Valenciennes, 1836) Fr, Br native   30.00 cm SL male/unsexed  Found in Kompot (Ref. 36654). 
Plotosidae Plotosus canius Hamilton, 1822 Fr, Br, M native  Trey andaing tonlay (Khmer), Trey andeng koi (Khmer), Trey Andêng koi (Khmer) common (usually seen) 111 cm TL male/unsexed  Occurs in the lower part of the Mekong River (Ref. 12693). Found in Tonlé Sap (Ref. 36654). 
Polynemidae Polynemus aquilonaris Motomura, 2003 Fr native   15.80 cm SL male/unsexed  Occurs in the Mekong River system and in Lake Tonle Sap and its related rivers (Ref. 49954, 57343). 
Polynemidae Polynemus dubius Bleeker, 1853 Fr, Br native  Trey pream sor (Khmer)  20.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 12693). Found in Tonlé Sap Lake in Siem Reap province (Ref. 36662) and Great Lake (Ref. 33813). 
Polynemidae Polynemus melanochir Valenciennes, 1831 Fr, Br native  Trey pream loeung (Khmer), Lake blackhand paradise fish (English)  25.00 cm SL male/unsexed  Known from the Mekong (Ref. 12693 ) and Tonle Sap, Great Lake (Ref. 33813, 36686, 45353, 57343). 
Polynemidae Polynemus multifilis Temminck & Schlegel, 1843 Fr native  Trey kam pream (Khmer), Trey pream (Khmer)  28.00 cm SL male/unsexed  Occurs in the Mekong delta (Ref. 12693). 
Cyprinidae Poropuntius kontumensis (Chevey, 1934) Fr native   20.00 cm TL male/unsexed  Known from the Mekong basin. Also Ref. 35912. 
Cyprinidae Poropuntius laoensis (Günther, 1868) Fr native   32.00 cm TL male/unsexed  Known from the Mekong River. Also Ref. 35912, 43281. 
Cyprinidae Poropuntius normani Smith, 1931 Fr native   13.00 cm SL male/unsexed   
Pristidae Pristis microdon Latham, 1794 Fr, Br, M native  Trey thkaw (Khmer), Trey thka (Khmer) scarce (very unlikely) 700 cm TL male/unsexed  Has not been seen in Tonle Sap and Great Lake for several decades (Ref. 12693). Also Ref. 3902, 9859, 36686. 
Pristidae Pristis zijsron Bleeker, 1851 Fr, Br, M native   730 cm TL male/unsexed   
Pristolepididae Pristolepis fasciata (Bleeker, 1851) Fr native  Trey kan trob (Khmer), Kantrorb (Khmer), Kantrorp (Khmer), Trey kantrawb (Khmer), Trey kantrop (Khmer), Trey kranh (Khmer)  31.00 cm TL male/unsexed  Known from the Mekong basin (Ref. 12693, 27732). Found around the Tonle Sap Great Lake and river (Ref. 36651), Réam, Stung Treng, Siem Réap, Beng Kebal Damrey (Ref. 36654) and Sangke river, Battambang province (Ref. 41486). Occurs in still standing or sluggish waters (Ref. 36686). More common in permanent lakes than in the Mekong mainstream (Ref. 37770). Also Ref. 36662, 33813, 45353. 
Cyprinidae Probarbus jullieni Sauvage, 1880 Fr, Br, Fi native  Trasork (Khmer), Tray trawsawk (Khmer), Trey trasak (Khmer), Trey trâsâk (Khmer), Trey trawsak (Khmer) scarce (very unlikely) 150 cm SL male/unsexed  Occurs in the Mekong basin from the Lao border to the Great Lake (Ref. 12693). Reportedly migrating up the Mekong River and into the Tonle Sap (Grand Lac or Great Lake) to spawn (Ref. 3902). Upstream spawning migrations occur from October to February from Kompong Cham in Cambodia to Chiang Khong in Thailand (Ref. 37770). Trophic migrations are also undertaken, mainly by juveniles and sub-adults at the onset of the flood season. Smaller fishes of 20 to 60 cm migrate from the Mekong into smaller streams and flooded areas. At Sambor, juveniles occur from Lake Sandan, a floodplain lake (Ref. 37770). One of the favorite food fish; meat is considered excellent; eggs are especially priced; made into "som kai pba eum", in which one part of fish eggs with salt and ground rice added is mixed with 15 parts of meat; the uncooked mix is placed in earthen jars to ferment for a number of days before eating (Ref. 12369). Also Ref. 3902, 7427, 12369, 36651, 36686, 33813, 37772, 43281. 
Cyprinidae Probarbus labeamajor Roberts, 1992 Fr, Fi native  Trey trawsak sor (Khmer)  150 cm SL male/unsexed  Occurs in the Mekong River. Found in Stung Treng (Ref. 12693). A migratory species recorded below Khone Falls to the Tonle Sap River and the Great Lake in declining numbers (Ref. 37772). Also Ref. 7427, 12255, 43281. 
Cyprinidae Probarbus labeaminor Roberts, 1992 Fr native  Trey trawsak (Khmer)  150 cm TL male/unsexed  Known from the Mekong River. Also Ref. 43281. 
Oxudercidae Pseudapocryptes borneensis (Bleeker, 1855) Fr, Br, Fi native   12.00 cm TL male/unsexed  Occurs in the Mekong delta. 
Oxudercidae Pseudapocryptes elongatus (Cuvier, 1816) Fr native  common (usually seen) 20.00 cm TL male/unsexed  Found in the Mekong delta. 
Akysidae Pseudobagarius filifer (Ng & Rainboth, 2005) Fr native   5.01 cm SL male/unsexed  Known from the Great Lake in the Tonlé Sap drainage of the Mekong drainage (Ref. 56231). 
Gobiidae Pseudogobiopsis oligactis (Bleeker, 1875) Fr, Br native   6.00 cm TL male/unsexed  Museum: Stung Tong Hong, 77 km on road from Phnom Penh to Sihanoukville, d'Aubenton, CMK 4806 (3.5 cm SL) (Ref. 43716). 
Gobiidae Pseudogobius poicilosoma (Bleeker, 1849) Fr, Br native   6.50 cm TL male/unsexed  Not seen in markets (Ref. 12693). 
Balitoridae Pseudohomaloptera leonardi (Hora, 1941) Fr native   6.50 cm SL male/unsexed  Known from the Mekong basin. Found in small streams as well as in the main stream of the Tonlé San. 
Pangasiidae Pseudolais micronemus (Bleeker, 1846) Fr native  Trey pra (Khmer)  100.00 cm male/unsexed  Known from the Mekong basin (Ref. 43281). May be found in Great Lake and Tonle Sap river (Ref. 36686). Also Ref. 36654. 
Pangasiidae Pseudolais pleurotaenia (Sauvage, 1878) Fr native  Trey chhwiet (Khmer), Trey chhviet (Khmer)  35.00 cm SL male/unsexed  Occurs in the Mekong basin. Found in Tonlé Sap, Kaskos and Phnom Penh (Ref. 36654). 
Bagridae Pseudomystus bomboides Kottelat, 2000 Fr native   4.20 cm SL male/unsexed  Found in the Mekong basin (Ref. 43281).  No picture yet.
Bagridae Pseudomystus siamensis (Regan, 1913) Fr, Fi native  Trey kanchos thmor (Khmer), Trey chouchus thmar (Khmer), Trey kanchos thmâr (Khmer)  18.00 cm TL male/unsexed  Found in Mekong basin (Ref. 12693). Occurs in Kompong Chnan, Tonlé Sap and Phnom Penh (Ref. 36654). Also Ref. 4537. 
Bagridae Pseudomystus stenomus (Valenciennes, 1840) Fr native  Trey chhlang (Khmer)  12.00 cm TL male/unsexed  Known from the Mekong basin. Found in Sékong at Stung Treng (Ref. 36654). 
Siluridae Pterocryptis bokorensis (Pellegrin & Chevey, 1937) Fr native   15.00 cm TL male/unsexed  Known from the Mekong basin. 
Siluridae Pterocryptis cochinchinensis (Valenciennes, 1840) Fr native   40.10 cm TL male/unsexed  Found in Bokor (Ref. 36654). 
Siluridae Pterocryptis torrentis (Kobayakawa, 1989) Fr native   20.00 cm TL male/unsexed  Known from the Cardamon Mountains in southern Cambodia. 
Cyprinidae Puntigrus partipentazona (Fowler, 1934) Fr native  Trey khla (Khmer), Kanh chrea (Khmer), Trey bai kamnat (Khmer)  6.00 cm TL male/unsexed  Found in the Mekong basin (Ref. 12693, 26580). Occurs in Beng Kebal Damrey, Tonlé Sap and Skoum (Ref. 36654). Also Ref. 12041, 37831, 43281. 
Cyprinidae Puntioplites bulu (Bleeker, 1851) Fr native  Kanh chrea (Khmer), Trey kanchrea (Khmer), Trey kôchrea (Khmer), Trey kuch chhrea (Khmer) fairly common (chances are about 50%) 44.30 cm TL male/unsexed  Known from the Mekong basin. Found in Great Lake, Tonle Sap (Ref. (Ref. 12693, 36651) and Cham Chamres (Ref. 36654). Previously common in the Great Lake where it was an important part of the catch by the large traps (Ref. 12693). 
Cyprinidae Puntioplites falcifer Smith, 1929 Fr, Fi native  Trey chrakaing (Khmer)  40.00 cm male/unsexed  Found in the Mekong basin. Although common around Stung Treng, it does not seem to occur in the Great Lake (Ref. 12693). In northern Cambodia (Stung Treng-Kratie), this species migrates upstream in this river stretch in November-December and downstream in April-June (Ref. 37770). Both upstream and downstream migrations are associated with full moon (Ref. 37770). Also Ref. 43281. 
Cyprinidae Puntioplites proctozystron (Bleeker, 1865) Fr, Fi native  Chra keng (Khmer), Cha keng (Khmer), Chrakeng (Khmer), Trey chakeng (Khmer), Trey chrakaing (Khmer) fairly common (chances are about 50%) 44.00 cm TL male/unsexed  Known from the Mekong basin (Ref. 12693). Found around the Tonle Sap river, Great Lake (Ref. 36651) and Siem Reap (Ref. 36654). Also Ref. 33813, 43281, 45353. 
Cyprinidae Puntioplites waandersi (Bleeker, 1859) Fr native  Trey chrakaing (Khmer)  50.00 cm TL male/unsexed  Occurs in the lower Mekong. Recorded from the Great Lake (Ref. 12693). Also Ref. 36686. 
Cyprinidae Puntius brevis (Bleeker, 1849) Fr native  Try sangkat prak (Khmer), Trey angkat prak (Khmer), Trey anko prak (Khmer)  14.00 cm TL male/unsexed  Occurs in the Mekong basin (Ref. 12693, 27732). Found in Beng Kebal Damrey, O Po Kampon, Stung Chihreng, Stung Sang, Tonlé Sap, Boum Long (Ref. 36654), Great Lake (Ref. 33813) near Siem Reap (Ref. 45353) and Sangke river, Battambang province (Ref. 41486). Also Ref. 7050, 27732, 43281. 
Cyprinidae Puntius masyai Smith, 1945 Fr native  Trey angkat prak (Khmer)  2.50 cm TL male/unsexed  Found in Great Lake and Tonle Sap (Ref. 33813). 
Danionidae Raiamas guttatus (Day, 1870) Fr native  Trey sawka keo (Khmer), Trey sråka kéo (Khmer), Trey temprauk (Khmer)  30.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref.12693). Found in Srépok, Siem Reap, Battembang and Tonlé Sap (Ref. 36654). Recorded in Great Lake (Ref. 36686). Also Ref. 4832, 27732. 
Danionidae Rasbora amplistriga Kottelat, 2000 Fr native   3.40 cm SL male/unsexed  Known from the Mekong basin. Also Ref. 36949. 
Danionidae Rasbora argyrotaenia (Bleeker, 1849) Fr native   14.00 cm TL male/unsexed  Known from the Mekong River. 
Danionidae Rasbora aurotaenia Tirant, 1885 Fr native  Chang wa moul (Khmer), Trey changwa mool (Khmer)  15.00 cm SL male/unsexed  Found around the Tonle Sap River (Ref. 36651). Occurs at the surface of pools, ponds and streams (Ref. 36686). Also Ref. 33813, 36662, 43281, 45353. 
Danionidae Rasbora bankanensis (Bleeker, 1853) Fr native   6.00 cm SL male/unsexed  Known from Stung Treng-Saigon, 369 km (Ref. 36654). 
Danionidae Rasbora borapetensis Smith, 1934 Fr native  Trey changwa srawlung (Khmer)  10.00 cm TL male/unsexed  Known from the Mekong basin (Ref. 27732). Found in Stung O Krien, Stung Po Ben, Beng Kebal Damrey, Stung Chihreng, Tuk Sap, Snoc Trou, Spean Tros (Ref. 36654). 
Danionidae Rasbora caudimaculata Volz, 1903 Fr native  Trey changwa poht (Khmer)  17.00 cm SL male/unsexed  Known from the Mekong basin. Found in Tonlé Sap in Siem Reap province (Ref. 36662). Also Ref. 26580. 
Danionidae Rasbora daniconius (Hamilton, 1822) Fr native  Trey changwa chhnoht (Khmer)  15.00 cm TL male/unsexed  Occurs in the Mekong basin (Ref. 27732), Beng Kebal Damrey, Stung Sang, Stung Po Ben (Ref. 36654), and Tonle Sap (Ref. 33813). Also Ref. 43281, 45353. 
Danionidae Rasbora dusonensis (Bleeker, 1850) Fr native  Trey changwa (Khmer), Trey changwar muol (Khmer)  12.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 27732), Beng Kebal Damrey, Stung Santrea, Srepok, Stung Chihreng, Kompong Cham and Tonlé Sap (Ref. 36654). 
Danionidae Rasbora hobelmani Kottelat, 1984 Fr native  Trey changwa (Khmer)  6.00 cm SL male/unsexed  Occurs in the Mekong River (Ref. 12693, 26580). Found in Tonle Sap (Ref. 33813). 
Danionidae Rasbora paucisqualis Ahl, 1935 Fr native  Trey changwa chhnoht (Khmer)  4.00 cm SL male/unsexed  Occur in the Mekong basin. Found 369 km on the road from Stung Treng to Saigon, Sré Umbell (Ref. 36654). Known from Tonle Sap (Ref. 33813). Also Ref. 26580. 
Danionidae Rasbora paviana Tirant, 1885 Fr native  Trey changwa chhnoht (Khmer)  12.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 27732). Found in Tonle Sap and Great Lake (Ref. 33813). Also Ref. 45353. 
Danionidae Rasbora rubrodorsalis Donoso-Büchner & Schmidt, 1997 Fr native   3.30 cm SL male/unsexed  Known from Lake Tonle Sap near Siem Reap (Ref. 45353). 
Danionidae Rasbora sumatrana (Bleeker, 1852) Fr native   13.00 cm TL male/unsexed  Known from Srépok, Ratanakiri, Tuk Sap, Boum Long, Stung Santrea, Stung Treng, Sianoukville (Ref. 36654). Also Ref. 3902. 
Danionidae Rasbora tornieri Ahl, 1922 Fr native  Trey changwa mool (Khmer)  17.00 cm SL male/unsexed  Known from the Mekong basin. Occur in Tonlé Sap (Ref. 12693, 33813). 
Danionidae Rasbora trilineata Steindachner, 1870 Fr native  Trey changwa poht (Khmer)  13.00 cm TL male/unsexed  Occurs in the Mekong basin (Ref. 27732, 26580). Found in O Po Kampon, Beng Kebal Damrey, Skoum, Prek Kandoz and Réam (Ref. 36654). 
Danionidae Rasbosoma spilocerca (Rainboth & Kottelat, 1987) Fr native  Trey changwa poht (Khmer)  2.60 cm SL male/unsexed  Known from the Mekong River. Also Ref. 26580, 43281. 
Gobiidae Redigobius bikolanus (Herre, 1927) Fr, Br native   4.90 cm TL male/unsexed  Found in Mekong delta (Ref. 12693). 
Gobiidae Rhinogobius mekongianus (Pellegrin & Fang, 1940) Fr, Fi native   5.00 cm SL male/unsexed  Found in the Mekong River. 
Carcharhinidae Rhizoprionodon acutus (Rüppell, 1837) Fr, Br, M native  Trey chhlarm (Khmer), Trey chhlam (Khmer)  175 cm TL male/unsexed ;80.80 cm TL female  Enters freshwater and recorded several times from Cambodia as far upstream as the Great Lake (Ref. 12693). Found in Tonle Sap (Ref. 36686) and the Great Lake (Ref. 12693). Also Ref. 244, 3902, 9997. 
Cichlidae Sarotherodon melanotheron Rüppell, 1852 Fr introduced   28.00 cm SL male/unsexed  Found in Boum Long (Ref. 36654). 
Cyprinidae Scaphiodonichthys acanthopterus (Fowler, 1934) Fr native   31.00 cm SL male/unsexed  Known from the Mekong basin. Also Ref. 43281. 
Cyprinidae Scaphiodonichthys burmanicus Vinciguerra, 1890 Fr native   22.00 cm TL male/unsexed   
Cyprinidae Scaphognathops bandanensis Boonyaratpalin & Srirungroj, 1971 Fr native  Trey papak (Khmer), Ankat prak (Khmer)  40.00 cm SL male/unsexed  Found in the Mekong basin (Ref. 12693, 26580). Occurs in Sékong at Stung Treng (Ref. 36654). 
Cyprinidae Scaphognathops stejnegeri (Smith, 1931) Fr, Fi native  Trey chrakaing (Khmer)  25.00 cm SL male/unsexed  Known from the Mekong basin (Ref. 12693, 26580). Found in Sékong at Stung Treng (Ref.36654). Also Ref. 27732. 
Scatophagidae Scatophagus argus (Linnaeus, 1766) Fr, Br, M, Fi native  Spotted scat (English)  45.00 cm TL male/unsexed  Occurs in the Mekong basin. Probably found at the upper end of the tidal zone. Also Ref. 4515. 
Nemacheilidae Schistura daubentoni Kottelat, 1990 Fr native   3.50 cm SL male/unsexed  Known from the Mekong basin in Prek Peas, a stream entering the Mekong some 55 km south of Stung Treng and in Se San (Ref. 12693). Also Ref. 27732, 39226. 
Nemacheilidae Schistura diminuta Ou, Montaña, Winemiller & Conway, 2011 Fr native   1.95 cm SL male/unsexed  Known presently only from Sekong River, Mekong Drainage. Found in the mainstream of the river, from moderate flow, over a sandy substrate (Ref. 88809).  No picture yet.
Nemacheilidae Schistura kampucheensis Bohlen, Petrtýl, Chaloupková & Borin, 2016 Fr endemic   5.59 cm SL male/unsexed  Found in tributaries of the rivers Mekong, Tek Chhou and Srae Ambel in the provinces Kampot, Ratanakiri and Kaoh Kong; distributed over a large part of Cambodia, not from any other country (Ref. 119152).  No picture yet.
Nemacheilidae Schistura kengtungensis (Fowler, 1936) Fr native   11.00 cm SL male/unsexed  Likely to be found downstream in northern Cambodia. 
Osteoglossidae Scleropages formosus (Müller & Schlegel, 1840) Fr native  Trey tapawt (Khmer)  90.00 cm TL male/unsexed  Known from the Cardamom mountains southward to Kampot (Ref. 12693) and Sré Umbel (Ref. 36654). Also Ref. 7050. 
Scombridae Scomberomorus sinensis (Lacepède, 1800) Fr, Br, M native  Trey beyka (Khmer), Trey sbaika (Khmer), Trey Sbay Ka (Khmer) occasional (usually not seen) 247 cm TL male/unsexed  A marine species that ascends the Mekong River (Ref. 168) to the Great Lake (Ref. 12693). Commanded a high price in the Phnom Penh market in 1964 (Ref. 9684). Large individuals seen during dry season in the fast flowing Mekong from Khoné to Kratié. Smaller ones are found from Kratié to Phnom Penh. Found in Tonlé Sap during low waters and in Prek Tasom near Snoc-Trou during floods (Ref. 12693). Known from Rocakong and Quatre Bras (Ref. 36654). 
Engraulidae Setipinna melanochir (Bleeker, 1849) Fr native  Chhmar (Khmer), Trey chhmar (Khmer), Trey chmar (Khmer)  33.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 43281). Recorded from the Tonle Sap and the Great Lake (Ref. 36651). Also Ref. 36654, 36662, 36686, 33813, 43281, 45353. 
Gastromyzontidae Sewellia lineolata (Valenciennes, 1846) Fr native   5.66 cm SL male/unsexed  Known from the Mekong basin. 
Cyprinidae Sikukia gudgeri (Smith, 1934) Fr, Fi native  Trey kambot chramos (Khmer)  18.00 cm SL male/unsexed  Found in the Mekong basin. Usually sold fresh in the market at Stung Treng. Also Ref. 27732, 26580. 
Cyprinidae Sikukia stejnegeri Smith, 1931 Fr, Fi native   12.00 cm TL male/unsexed  Known from the Mekong basin (Ref. 12693). Found in Tonlé Sap and Phnom Penh (Ref. 36654). Used to make prahoc along the Tonlé Sap (Ref. 12693), Also Ref. 36686, 37829, 26580. 
Sillaginidae Sillago sihama (Fabricius, 1775) Fr, Br, M native   31.00 cm SL male/unsexed   
Siluridae Silurichthys hasseltii Bleeker, 1858 Fr native   11.00 cm TL male/unsexed  Known from the Mekong basin. Occur in the small upland streams with coarse substrate from the Cardamom mountains of southern Cambodia (Ref. 12693). 
Siluridae Silurichthys phaiosoma (Bleeker, 1851) Fr native   15.00 cm SL male/unsexed  Occur in small upland streams with acidic water and decomposing vegetation on the bottom from Cardamom mountains (Ref. 12693). 
Siluridae Silurichthys schneideri Volz, 1904 Fr native   16.00 cm SL male/unsexed   
Gobiidae Stenogobius genivittatus (Valenciennes, 1837) Fr, Br native   18.00 cm SL male/unsexed  Occurs in the Mekong delta. 
Gobiidae Stenogobius gymnopomus (Bleeker, 1853) Fr native   15.00 cm SL male/unsexed   
Gobiidae Stigmatogobius sadanundio (Hamilton, 1822) Fr, Br native   9.00 cm SL male/unsexed  Known from the Mekong basin. 
Ehiravidae Sundasalanx praecox Roberts, 1981 Fr native   2.25 cm SL male/unsexed  Found in the Mekong basin (Ref. 129693). 
Botiidae Syncrossus beauforti (Smith, 1931) Fr native  Trey kanchrouk (Khmer), Trey damrey (Khmer)  25.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 27732). Known from Tonlé Sap, Stung Sang, Mae Khong at Kompong Reat (Ref. 36654). 
Botiidae Syncrossus helodes (Sauvage, 1876) Fr native  Trey kanchrouk chhnoht (Khmer), Trey kanchrouk (Khmer), Trey kanchrut (Khmer)  30.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 12693, 27732). Known from Tonlé Sap, Mae Khong at Kompong Reat, Phnom Penh (Ref. 36654) and Great Lake (Ref. 33813). Can be taken in small upland streams with fast currents, as well as at bottom depths in the Great Lake. Moves into flooded areas during the rainy season and returns to rivers during November and December, where it is a common element of the dai-net catch in the Tonlé Sap. Made into prahoc along the Tonlé Sap (Ref. 12693). Also Ref. 26580, 45353. 
Cyprinidae Systomus jacobusboehlkei (Fowler, 1958) Fr native   12.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 27732). Also Ref. 12693, 43281. 
Cyprinidae Systomus rubripinnis (Valenciennes, 1842) Fr native  Ampil tum (Khmer), Trey ampil tum (Khmer), Trey kol prik (Khmer) scarce (very unlikely) 25.00 cm SL male/unsexed  Known from the Mekong basin (Ref. 12693). Found around the Tonle Sap river and Great Lake (Ref. 36651), Siem Reap, and Battembang (Ref. 36654). Marketed fresh or made into prahoc (Ref. 36686). Also Ref. 7050, 36662, 33813, 45353. 
Gobiidae Taenioides gracilis (Valenciennes, 1837) Fr native   30.00 cm TL male/unsexed  Found in the lower Mekong. 
Gobiidae Taenioides nigrimarginatus Hora, 1924 Fr, Br native   23.00 cm TL male/unsexed  Occurs in the Mekong delta. Not seen in markets (Ref. 12693). 
Dorosomatidae Tenualosa thibaudeaui (Durand, 1940) Fr, Fi native  Kbork (Khmer), Laotian shad (English), Trey ca moi (Khmer), Trey kabåk (Khmer), Trey kbork (Khmer), Trey sam lôi (Khmer) common (usually seen) 30.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 12693). Found around the Tonle Sap, Great Lake (Ref. 36651, 36686) and Phnom Penh (Ref. 36654). Rare below the Khone Falls to the Tonle Sap River and the Great Lake (Ref. 37772). Migrates upstream from Kandal Province (near Phnom Penh) to the Khone Falls from October to February, peaking during November-December. Migrates dowstream from Khone Falls at least to Kompong Cham Province from April to July. At Sray Son Thor in Kompong Cham Province, fish migrates from the Tonel Sap River (Ref. 37770). Also Ref. 27732, 33813, 37772. 
Dorosomatidae Tenualosa toli (Valenciennes, 1847) Fr native  Trey palung (Khmer)  60.00 cm TL male/unsexed  Found in Tonle Sap river and Great Lake (Ref. 33813). May be found in Cambodian Mekong near the Viet Nam border (Ref. 12693). 
Terapontidae Terapon jarbua (Fabricius, 1775) Fr, Br, M, Fi native  Crescent perch (English), Jarbua (English), Cá ham (Vietnamese)  36.00 cm TL male/unsexed  This species occurs in the Mekong delta and may sporadically enter Cambodia (Ref. 12693). Also Ref. 4515. 
Tetraodontidae Tetraodon barbatus Roberts, 1998 Fr native   13.62 cm SL male/unsexed  Known from the Mekong River (Ref. 95519).  No picture yet.
Danionidae Thryssocypris tonlesapensis Roberts & Kottelat, 1984 Fr, Fi native  Trey carp (Khmer)  6.38 cm SL male/unsexed  Known from the Mekong basin (Ref. 12693, 26580). Found in Tonlé Sap (Ref. 36654). Also Ref. 31464. 
Cyprinidae Thynnichthys thynnoides (Bleeker, 1852) Fr native  Linh (Khmer), Trey kros memay (Khmer), Trey lenh (Khmer), Trey linh (Khmer) common (usually seen) 25.00 cm TL male/unsexed  Known from the Mekong River (Ref. 12693, 26580). Found around the Tonle Sap river, Great Lake (Ref. 36651), Prek Phnan (Ref. 36654), Sangke river, Battambang province (Ref. 41486). Also Ref. 7050, 36662, 33813, 45353. 
Callionymidae Tonlesapia tsukawakii Motomura & Mukai, 2006 Fr native   3.36 cm SL male/unsexed  Found only in the northwestern part of Lake Tonle Sap (Ref. 56950); collected from a market at Phsar Krom, Siem Reap (Ref. 87929). 
Cyprinidae Tor douronensis (Valenciennes, 1842) Fr native   35.00 cm TL male/unsexed   
Cyprinidae Tor tambra (Valenciennes, 1842) Fr native   100.00 cm TL male/unsexed  Occurs in Mekong basin. 
Cyprinidae Tor tambroides (Bleeker, 1854) Fr native  Trey khaor (Khmer)  100.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 27732). Also Ref. 43281. 
Toxotidae Toxotes chatareus (Hamilton, 1822) Fr native  Trey kancheak sla (Khmer), Kanhchea sla (Khmer), Trey koncheak sla (Khmer)  40.00 cm SL male/unsexed  Known from the Mekong basin. Found in Grand Lac = Lake Tonle Sap, Tonlé Sap river and Réam (Ref. 36654). Also Ref. 36662, 45353. 
Toxotidae Toxotes microlepis Günther, 1860 Fr native  Trey kancheak sla (Khmer)  15.00 cm SL male/unsexed  Occurs in the Mekong. Found along shores of flowing and standing waters (Ref. 36686). Known from Tonle Sap and Great Lake (Ref. 33813). 
Osphronemidae Trichopodus microlepis (Günther, 1861) Fr, Fi native  Trey kamphlaenh (Khmer), Kamphleanh (Khmer), Trey kåmphleanh phluk (Khmer), Trey Kanphleanh Phluk (Khmer), Trey kawmphleanh phluk (Khmer) occasional (usually not seen) 14.00 cm TL male/unsexed  Occurs in the Mekong basin (Ref. 12693). Found around the Tonle Sap Great Lake and river (Ref. 36651). Known from Réam, Kompong Réat, Stung Sang (Ref. 36654) and Sangke river, Battambang province (Ref. 41486). Occurs in shallow and sluggish waters (Ref. 36686). Also Ref. 36662, 45353, 94476. 
Osphronemidae Trichopodus pectoralis Regan, 1910 Fr, Fi native  Kanthor (Khmer), Kantor (Khmer), Trey kantho (Khmer), Trey kanthor (Khmer), Trey kawnthor (Khmer)  25.00 cm TL male/unsexed  Naturally occurring in the Mekong basin (Ref. 12693). Found around the Tonle Sap Great Lake and river (Ref. 36651) and Stung Sen (Ref. 36654). Known from the flooded forests of the lower Mekong and gradually moves back to rivers and Great Lake as floodwaters recede (Ref. 12693, 36686). Cultured in rice fields in Svay Rieng (Ref. 121504). Also Ref. 3902, 33813, 37772, 43281. 
Osphronemidae Trichopodus trichopterus (Pallas, 1770) Fr, Fi native  Trey kawmphleanh samrai (Khmer), Trey kampleanh samré (Khmer), Trey kanpleanh samrê (Khmer), Trey Komphléang (Khmer)  15.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 12693, 27732). Known from Stung Sen, Tuk Sap, Stung Chang, Kompong Kléang and Beng Kebal Damrey (Ref. 36654) and Lake Tonle Sap near Siem Reap (Ref. 45353). Much more common in small streams and canals than in the Mekong River (Ref. 37770). Also Ref. 3902, 36662. 
Osphronemidae Trichopsis pumila (Arnold, 1936) Fr native  Trey kroem tun sai (Khmer)  4.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 12693). Known from Beng Kebal Damrey, Tuk Sap and Stung Po Ben (Ref. 36654). 
Osphronemidae Trichopsis schalleri Ladiges, 1962 Fr native   5.00 cm SL male/unsexed  Known from Lake Tonle Sap near Siem Reap (Ref. 45353). 
Osphronemidae Trichopsis vittata (Cuvier, 1831) Fr native  Trey kroem kdah (Khmer)  8.00 cm TL male/unsexed  Occurs in the Mekong basin (Ref. 12693). Known from Kirikom, Tuk Sap, Beng Kebal Damrey, Stung Sen and O Po Kampon (Ref. 36654). 
Danionidae Trigonopoma pauciperforatum (Weber & de Beaufort, 1916) Fr native  Trey changwa (Khmer)  7.00 cm TL male/unsexed  Known from the Mekong basin. Found in Tuk Sap (Ref. 36654). 
Danionidae Trigonostigma espei (Meinken, 1967) Fr native  Trey changwa chhnoht (Khmer)  2.50 cm SL male/unsexed  Known from Tuk Sap (Ref. 36654). Also Ref. 38434. 
Nemacheilidae Tuberoschistura cambodgiensis Kottelat, 1990 Fr native   4.00 cm TL male/unsexed  Found in Tonle Sap, Siem Reap and Kompong Thom near the Great Lake (Ref. 36686) and in sandy bottomed streams south of Phnom Penh (Ref. 12693). Recorded from a tributary of Tonlé Sap in the Mekong basin (Ref. 39226). Also Ref. 26580. 
Dasyatidae Urogymnus polylepis (Bleeker, 1852) Fr native  Trey bawbel (Khmer)  240 cm WD male/unsexed  Found in the Mekong River. Also Ref. 43281. 
Siluridae Wallago attu (Bloch & Schneider, 1801) Fr, Fi native  Sandai (Khmer), Chhke nhy (Khmer), Kropaut (Khmer), Trey kråpoat (Khmer), Trey sanday (Khmer)  240 cm TL male/unsexed  Found all over Cambodia with the exception of highlands streams. Specially common in large rivers and on the lower Mekong floodplain. Marketed fresh and sometimes put on ice for shipment to Thailand (Ref. 12693). Found around the Tonle Sap River and the Great Lake (Ref. 36651), Stung Chinit, Mae Khong at Areyksat, Prek Men, Rocakong, Peam Chikang, Kaskos, Bac Nam and Prey Veng (Ref. 36654). Also Ref. 3902, 4833, 33813, 36686, 37770, 37772. 
Siluridae Wallago micropogon Ng, 2004 Fr, Fi native  Trey stuak (Khmer)  154 cm SL male/unsexed  Known from the Mekong basin (Ref. 12693, 37772). Found in the Great Lake and Tonle Sap river (Ref. 33813). Its numbers have declined below the Khone Falls to the Tonle Sap River and the Great Lake (Ref. 37772). Migrates downstream from May to July (Ref. 37770). Frequently taken with explosives in northern Cambodia (Ref. 12693). 
Belonidae Xenentodon cancila (Hamilton, 1822) Fr native  Trey phtoung (Khmer), Phtong (Khmer), Trey phtaung (Khmer)  40.00 cm TL male/unsexed  Found in Mekong (Ref. 12693), Stung Song, Tonlé Sap river, Beng Kebal Damrey (Ref. 36654) and Great Lake = Lake Tonle Sap (Ref. 33813, 45353). 
Belonidae Xenentodon canciloides (Bleeker, 1854) Fr native  Trey phtoung (Khmer)  30.00 cm SL male/unsexed  Occurs in the Mekong basin (Ref. 43281). Found at surface of slow moving waters (Ref. 36686). Known from Tonle Sap and Great Lake (Ref. 33813). Not seen in the markets of Cambodia but probably caught and marketed fresh (Ref. 12693). 
Botiidae Yasuhikotakia eos (Taki, 1972) Fr native  Trey kanchrouk krawhorm (Khmer)  11.00 cm TL male/unsexed  Found in the Mekong River. Also Ref. 26580. 
Botiidae Yasuhikotakia lecontei (Fowler, 1937) Fr native  Trey kanchrouk loeung (Khmer)  15.00 cm SL male/unsexed  Found in flowing rivers of Mekong basin (Ref. 12693). Used to make prahoc in Tonle Sap (Ref. 36686). Known from Great Lake (Ref. 33813). Also Ref. 26580. 
Botiidae Yasuhikotakia modesta (Bleeker, 1864) Fr native  Trey kanchrouk krawhorm (Khmer), Trey kanchrut (Khmer)  25.00 cm SL male/unsexed  Found in the Mekong basin (Ref. 12693, 27732). Known from Tonlé Sap (common in November and December) (Ref. 36686), Mae Khong at Stung Treng, Prek Phan (Ref. 36654) and Great Lake (Ref. 33813). Undertakes upstream migration from the Mekong delta, around the saline intrusion zone to just below the Khone Falls from November to March (Ref. 37770). Migrates during full moon (or just before full moon at Kandal) from Kandal to Kompong Cham (Ref. 37770). From May to July, it migrates downstream from the Khone Falls, apparently to flooded areas in Southern Cambodia and the Mekong Delta (Ref. 37770). Juveniles around 2 cm appear during November-February from Stung Treng to Sambor and from July to October from Kratie to Kandal (Ref. 37770). Also Ref. 26580, 45353. 
Botiidae Yasuhikotakia morleti (Tirant, 1885) Fr native  Trey kanchrouk (Khmer)  10.00 cm TL male/unsexed  Found in the Mekong basin (Ref. 12693). Also Ref. 26580, 43281. 
Zenarchopteridae Zenarchopterus ectuntio (Hamilton, 1822) Fr native  Trey phtoung (Khmer)  18.00 cm TL male/unsexed  Found in Tonlé Sap (Ref. 36654). 
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