Mengyejiang

Generally considered to have an enormous natural range extending from Iran to Taiwan and Bali, with records existing from Iran, Iraq, Afghanistan, Pakistan, Nepal, India, Sri Lanka, Bangladesh, Bhutan, China, Myanmar, Thailand, Laos, Cambodia, Vietnam, Malaysia, Indonesia, and Singapore. However there exists significant evidence to suggest that C. gachua as currently understood represents a complex of similar-looking species, and a taxonomic review of the group is clearly required.

Type locality is given as 'Babianjiang River, 24°20'N, 100°10'E, Jingdong County, Yunnan Province, China'. The Babianjiang joins the Mengyejiang River to form the Langmajiang River, a tributary of the Lixianjiang (Black River) within the Red River basin.

It's been considered a synonym of Schistura caudofurca (Mai, 1978) by the majority of recent authors following Kottelat (2001) but this appears to be a case of misidentification since the two species exhibit several notable differences based on their respective descriptions (Endruweit, 2010).