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Zoological Research
Kunming Institute of Zoology, Chinese Academy of Sciences
ISSN: 2095-8137
Vol. 35, No. 1, 2014, pp. 59-66
Bioline Code: zr14006
Full paper language: English
Document type: Research Article
Document available free of charge

Zoological Research, Vol. 35, No. 1, 2014, pp. 59-66

 en Schistura sexnubes check for this species in other resources , a new diminutive river loach from the upper Mekong basin, Yunnan Province, China (Teleostei:Cypriniformes:Nemacheilidae)
Endruweit, Marco

Abstract

An ichthyofaunistic survey of Mekong tributaries in Lincang Prefecture, Yunnan Province, China yielded a new species of nemacheilid loach, herein described as Schistura sexnubes check for this species in other resources species nova. The new species is readily distinguishable from its congeners by the following combination of characters: 8+8 branched caudal fin rays, an incomplete lateral line, a dissociated caudal bar, a shallow caudal peduncle depth (7.6%-9.6% SL; respectively caudal peduncle 1.76-1.95 times longer than deep), a diminutive size of less than 50 mm SL, and no sexual dimorphism. A dorsocephalic pattern consisting of a black, forward directed V-shaped formation located between the nares, and a white, ovoid blotch on the upper operculum serves as an autapomorphy.

Keywords
Schistura sexnubes; New species; Mekong basin; Nemacheilidae; Yunnan

 
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