Anew species of the genus Triplophysa (Cypriniformes: Nemacheilidae), Iriplophysa longliensis sp. nov, from Guizhou, China

摘要

Anew species of nemacheilid loach, Triplophysa longliensis, is described from Yudonghe River, a small tributary of Pearl River in Guizhou Province, China. It can be distinguished from other valid Triplophysa loaches by the following combination of characters: body smooth and scaleless; head tapering; lips thin and smooth; posterior chamber of gas bladder highly developed, long, bag-shaped, tip reaching origin of pelvic fin; intestine short, bending in zigzag shape behind stomach; insertion of pelvicfin posterior to dorsal-fin origin; dorsal-fin origin closer to snout tip than to caudal-fin base; caudal fin deeply forked, upper lobe obviously longer than lower one; pelvic-fin tip reaching to anus.