Triplophysa yajiangensis sp.nov.is described from the upper and middle reaches of the Yalong River,Yangtze Basin,Ganzi Prefecture,Sichuan Province,China.This new species can be distinguished from other congeneric species by the following characters:body surface smooth and scaleless;lateral line complete;caudal peduncle compressed and tapered slightly;lower jaw shovel-shaped;head shorter than caudal peduncle;dorsal-fin origin anterior to pelvic-fin origin and closer to tip of snout than to caudal-fin base,last unbranched ray hard;pelvic-fin reaches or exceeds anus;posterior chamber of gas bladder absent;intestine spiral type with 3-5 winding coils.
展开▼