A new cave-dwelling loach,Triplophysa xichouensissp. nov. (Teleostei Nemacheilidae) from Yunnan, China
| Autor: | Shu-Wei Liu, Xiao-Fu Pan, Jun-Xing Yang, Xiao-Yong Chen |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Teleostei Nemacheilidae biology 010604 marine biology & hydrobiology Fish fin Anatomy Aquatic Science biology.organism_classification 010603 evolutionary biology 01 natural sciences Triplophysa Cave dwelling Swim bladder Taxonomy (biology) Snout Ecology Evolution Behavior and Systematics |
| Zdroj: | Journal of Fish Biology. 90:834-846 |
| ISSN: | 0022-1112 |
| Popis: | A new cave-dwelling loach of the genus Triplophysa, T. xichouensis, is described from an outlet of a subterranean river in Xisa Town, Xichou County, Yunnan Province, China. It can be distinguished from its congeners by the following characters: dorsal-fin rays iii, 8; anal-fin rays ii, 6; pectoral-fin rays i, 9 or 10; pelvic-fin rays i, 5 or 6; branched caudal-fin rays 16(8+8); eyes highly degenerated to a very tiny black dot; dorsal-fin origin closer to snout tip than to caudal-fin base and anterior to vertical line of pelvic-fin origin; pectoral fin length about two-thirds the distance between pectoral-fin origin to pelvic-fin origin; caudal peduncle slender, its length about three times its depth; caudal fin emarginate; body smooth and scaleless; lateral line complete and straight; anterior chamber of air bladder wrapped in dumbbell-shaped bony capsule and the posterior one well developed, long, oval; intestine short, bending in zigzag shape behind stomach. A key for the cave-dwelling species of Triplophysa is provided. urn:lsid:zoobank.org:pub:9162FFB1-7911-47C3-AE50-6A00E9590327 |
| Databáze: | OpenAIRE |
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