Description of Triplophysa luochengensis sp. nov. (Teleostei: Nemacheilidae) from a karst cave in Guangxi, China

A new cave-dwelling fish Triplophysa luochengensis is described .

J. Li*, J. H. Lan1, X. Y. Chen2,3 and L. N. Du4

*  Pearl River Fisheries Research Institute, Chinese Academy of Fishery Science, Guangzhou 510380, China, 

1  Du’an Fishery Technique Popularization Station, Du’an 530700, China,

2  Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences, Yezin, Nay Pyi Taw 05282, Myanmar, 

3  Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China

4  Kunming Natural History Museum of Zoology, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China

PubYear : 2017

Volume : 

Publication Name: Journal of Fish Biology

Page number : 1-9

Abstract: A new cave-dwelling fish Triplophysa luochengensis is described based on specimens collected from a karst cave in Guangxi Zhuang Autonomous Region, China, that is interconnected to the Hongshui River drainage. The species can be distinguished from its congeners by a combination of characters: eyes degenerated, anal fin with six branched rays, caudal fin with 16–17 branched rays, pectoral-fin length 72·4–95·8% of the distance between pectoral-fin origin and pelvic-fin origin, lateral head length 26·2–28·2% of standard length (LS), eye diameter 7·5–8·6 of LS, body covered by sparse scales, lateral line complete and 7–8 pre-operculo-mandibular pores. Dark pigments irregularly present on dorsum of head, dorsum and flank

Keyword: cave fish; Guangxi; karst cave; new species; Triplophysa

doi:10.1111/jfb.13364, available online at wileyonlinelibrary.com