Species most closely related to ‘Henicorhynchus’ thaitui sp. nov.: a Henicorhynchus lineatus b H. lobatus c H. ornatipinnis d H. siamensis e Cirrhinus jullieni f C. microlepis g C. molitorella; and h Speolabeo hokhanhi. Photos b, d, e, f and g from Vietnam, by D.D. Tran (Can Tho University, Vietnam); a and c from Laos, by Bounthob Praxaysombath (National University of Laos, Laos) (from Kano et al. 2013); and h from Vietnam, by D.T. Nguyen. Scale bars: 1 cm.