形态描述
体极扁薄，头背面及背部轮廓线平直。腹棱自胸鳍基部至肛门。头侧扁，尖长。口端位，斜裂。无须。背鳍刺后缘具明显的细锯齿。侧线在胸鳍上方急剧下弯。
生物学
Body very compressed and thin, with a keel from the breast to the anus. This species is found in the Zhujiang River, the Red River and the Hainan Island. The body length is about 50-100 mm.
国内分布
Pearl Basin and Hainan Island