形态描述
体细长，侧扁，背部平直。腹鳍基至肛门具腹棱。吻较尖，口端位，下颌前缘具小突，嵌入上颌的凹陷。无须。鳃耙10—14。侧线在胸鳍上方剧下弯。背鳍刺细，后缘光滑，末端柔软分节；臀鳍起点位于背鳍末端的正下方。
生物学
Body elongate and compressed, with a keel from the ventral to the anus. It is found in the northeast of Yunnan Province and the southwest of Sichuan Province, and lives in the slow current of the rivers or in the still water of lakes.
国内分布
金沙江水系