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List of Freshwater Fishes reported from Guyana
n = 520
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Table 1: 497 species currently present in the country/island (endemic, native, introduced, reintroduced);
Table 2: 12 species possibly present in the country/island (stray, questionable);
Table 3: 11 species demonstrated to be absent in the country/island (extirpated, not established, misidentification, error).
Table 4: 520 species reported from the country/island altogether.
Table : 520 .
     
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Family Species Author Info Occurrence Common names Abundance Max length Maturity Remark Photo
Loricariidae Corymbophanes andersoni Eigenmann, 1909 Fr native   8.60 cm SL male/unsexed  Known from the Aruataima Falls, upper Potaro (Ref. 6868). All known specimens are from Chenapou (formerly Aruataima) Falls, a large cataract on the upper Potaro River (37093).  No picture yet.
Loricariidae Corymbophanes kaiei Armbruster & Sabaj Pérez, 2000 Fr native   6.60 cm SL male/unsexed    No picture yet.
Characidae Creagrutus melanzonus Eigenmann, 1909 Fr native   3.60 cm SL male/unsexed  Type locality: Crab Falls, Essequibo R. (Ref. 12965). Also Ref. 598.  No picture yet.
Cichlidae Crenicara punctulata (Günther, 1863) Fr native   10.00 cm SL male/unsexed  Known from the Essequibo River drainage (Ref. 36377). 
Cichlidae Crenicichla albopunctata Pellegrin, 1904 Fr native   14.00 cm SL male/unsexed  Known from the Demerara River (Ref. 36377). 
Cichlidae Crenicichla alta Eigenmann, 1912 Fr native   16.00 cm SL male/unsexed  Known from the Essequibo River basin (Ref. 36377). 
Cichlidae Crenicichla johanna Heckel, 1840 Fr native   28.30 cm SL male/unsexed  Known from the Essequibo River basin (Ref. 36377). 
Cichlidae Crenicichla lugubris Heckel, 1840 Fr native   32.90 cm TL male/unsexed  Found in the Essequibo River drainage (Ref. 26372) and Branco River (Ref. 36377). 
Cichlidae Crenicichla macrophthalma Heckel, 1840 Fr misidentification   20.00 cm SL male/unsexed  Known from the country (Ref. 12251). Occurrence in the country not confirmed (Ref. 36377). 
Cichlidae Crenicichla reticulata (Heckel, 1840) Fr native   29.50 cm SL male/unsexed ;23.00 cm SL female  Known from the Essequibo River basin (Ref. 36377). 
Cichlidae Crenicichla saxatilis (Linnaeus, 1758) Fr native   20.00 cm SL male/unsexed   
Cichlidae Crenicichla strigata Günther, 1862 Fr native   30.00 cm SL male/unsexed  Known from the Amazon River basin (Ref. 36377). 
Cichlidae Crenicichla vaillanti Pellegrin, 1903 Fr native   12.60 cm SL male/unsexed  Known from the Essequibo River basin (Ref. 36377). 
Cichlidae Crenicichla wallacii Regan, 1905 Fr endemic   8.50 cm SL male/unsexed  Known from Essequibo River basin (Ref. 36377). Also Ref. 12251. 
Crenuchidae Crenuchus spilurus Günther, 1863 Fr native   5.70 cm TL male/unsexed  Also Ref. 4537, 37059. 
Characidae Ctenobrycon spilurus (Valenciennes, 1850) Fr native   8.00 cm SL male/unsexed  Occurs in the canals of ricefields near the Mana River (Ref. 12225). Also Ref. 38376. 
Xenocyprididae Ctenopharyngodon idella (Valenciennes, 1844) Fr introduced   150 cm TL male/unsexed  Reportedly used for aquaculture (Ref. 26042). 
Curimatidae Curimata cyprinoides (Linnaeus, 1766) Fr native   23.00 cm SL male/unsexed   
Curimatidae Curimata roseni Vari, 1989 Fr native   19.50 cm SL male/unsexed  Also Ref. 34109.  No picture yet.
Curimatidae Curimata vittata (Kner, 1858) Fr native   19.60 cm SL male/unsexed  Known from the Essequibo River basin (Ref. 38013). 
Curimatidae Curimatella alburnus (Müller & Troschel, 1844) Fr native   18.80 cm SL male/unsexed  Known from Rupununi (Ref. 28798).  No picture yet.
Curimatidae Curimatella immaculata (Fernández-Yépez, 1948) Fr native   18.80 cm TL male/unsexed  Known from Rupununi River of the Essequibo River system (Ref. 28798, 38013). 
Curimatidae Curimatopsis cryptica Vari, 1982 Fr native   6.50 cm TL male/unsexed  Type locality: Stream 2 km east of Lake Amucu, Rupununi Dist., ca. 3°43'N, 59°25'W (Ref. 12965). 
Cynodontidae Cynodon gibbus (Agassiz, 1829) Fr native   32.20 cm SL male/unsexed   
Cynodontidae Cynodon septenarius Toledo-Piza, 2000 Fr native   31.20 cm SL male/unsexed    No picture yet.
Characidae Cynopotamus essequibensis Eigenmann, 1912 Fr native   16.00 cm SL male/unsexed  Occurs in the Corantijn River (Ref. 12225). Also Ref. 36811.  No picture yet.
Sciaenidae Cynoscion acoupa (Lacepède, 1801) Fr, Br, M native  Grey snapper (English), Blacktail basher (English), Snapper bashaw (English), White bashaw (English)  110 cm TL male/unsexed  Also Ref. 5217. 
Sciaenidae Cynoscion steindachneri (Jordan, 1889) Fr, Br, M native   110 cm TL male/unsexed  C: Refs. 5217, 26819, 94486, 94561. 
Curimatidae Cyphocharax festivus Vari, 1992 Fr native   16.70 cm TL male/unsexed  Known from the Essequibo River basin (Ref. 38013). Museum: Essequibo: lower Potaro River, Tumatumari, USNM 66141, 30785. Rockstone, AMNH 7118 (Ref. 11334). 
Curimatidae Cyphocharax helleri (Steindachner, 1910) Fr native   10.00 cm SL male/unsexed  Museum: Essequibo, BMNH 1864.1.21:71 (paralectotype of C. spilurus, a misidentification). Yarakita Creek, AMNH 14280, 14437. Santo Rosa, AMNH 14441. Barama River, Waini River system, UMMZ 216028 (Ref. 11334). 
Curimatidae Cyphocharax microcephalus (Eigenmann & Eigenmann, 1889) Fr native   16.90 cm SL male/unsexed  Museum: Essequibo River, Rockstone, AMNH 14438 (Ref. 11334).  No picture yet.
Curimatidae Cyphocharax spilurus (Günther, 1864) Fr native  Cuticuru (Not specified)  10.40 cm SL male/unsexed  Known from Essequibo and Mazaruni-Potaro rivers (Ref. 11334) and Cuyuni River (Ref. 38013). Also Ref. 12225. 
Cetopsidae Denticetopsis iwokrama Vari, Ferraris & de Pinna, 2005 Fr native   4.30 cm SL male/unsexed  Known from Siparuni River (Ref. 56045). 
Cetopsidae Denticetopsis macilenta (Eigenmann, 1912) Fr native   6.70 cm SL male/unsexed  Known from the Essequibo River basin (Ref. 36486). Type locality: Creek below Potaro Landing, Guyana (Ref. 26282). 
Lebiasinidae Derhamia hoffmannorum Géry & Zarske, 2002 Fr endemic   6.14 cm SL male/unsexed  Endemic to the upper Mazaruni River, sand bank at the confluent of the Kamarang and Mazaruni rivers, NW part of Guyana north of Roraima, MTD F26491 (holotype, 6.14 cm SL, male) (Ref. 47610). 
Characidae Deuterodon mutator (Eigenmann, 1909) Fr native      No picture yet.
Characidae Deuterodon potaroensis Eigenmann, 1909 Fr native   6.00 cm SL male/unsexed  Known from the Potaro River basin (Ref. 48602). Type locality: Potaro R. at Amatuk Cataract, Guyana (Ref. 40966).  No picture yet.
Sternopygidae Distocyclus conirostris (Eigenmann & Allen, 1942) Fr native   50.00 cm TL male/unsexed  Known from the Essequibo River (Ref. 96854).  No picture yet.
Doradidae Doras carinatus (Linnaeus, 1766) Fr native   30.00 cm SL male/unsexed   
Doradidae Doras micropoeus (Eigenmann, 1912) Fr native   35.00 cm SL male/unsexed  Known from Lama stop-off and Wisnar in the Demerara River (Ref. 6868). 
Eleotridae Dormitator maculatus (Bloch, 1792) Fr native   70.00 cm TL male/unsexed   
Sternopygidae Eigenmannia macrops (Boulenger, 1897) Fr native   25.20 cm TL male/unsexed   
Sternopygidae Eigenmannia nigra Mago-Leccia, 1994 Fr native   47.60 cm TL male/unsexed  Found in the Rupununi River basin (Ref. 39524).  No picture yet.
Sternopygidae Eigenmannia virescens (Valenciennes, 1836) Fr native   44.00 cm SL male/unsexed 13 TL Also Ref. 26457. 
Gymnotidae Electrophorus electricus (Linnaeus, 1766) Fr native   250 cm SL male/unsexed  Collected from Essequibo, Corantijn, Cuyuni and Kuribrong rivers (Ref. 120918). 
Eleotridae Eleotris amblyopsis (Cope, 1871) Fr native   8.30 cm SL male/unsexed   
Eleotridae Eleotris pisonis (Gmelin, 1789) Fr native   25.00 cm TL male/unsexed   
Erythrinidae Erythrinus erythrinus (Bloch & Schneider, 1801) Fr native   20.00 cm SL male/unsexed   
Gerreidae Eucinostomus argenteus Baird & Girard, 1855 Fr, Br, M native   21.20 cm TL male/unsexed  Also Ref. 5217. 
Gerreidae Eugerres plumieri (Cuvier, 1830) Fr, Br, M native   40.00 cm TL male/unsexed   
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