Published May 14, 2024
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Description of a new troglobitic Sinocyclocheilus (Pisces, Cyprinidae) species from the upper Yangtze River Basin in Guizhou, South China
Authors/Creators
- 1. Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
- 2. Guiyang Bureau of Ecology and Environment, Guiyang, China
- 3. Guiyang Qianren Ecological Conservation Center, Guiyang, China
- 4. Zhejiang Forest Resource Monitoring Center, Hangzhou, China|Zhejiang Forestry Survey Planning and Design Company Limited, Hangzhou, China
- 5. Huazhong University of Science and Technology, Wuhan, China
Description
Sinocyclocheilus guiyang, a new troglobitic species from a subterranean tributary of the upper Yangtze Basin in Guiyang City, Guizhou Province, China is described in the present study. The new species is distinguishable from its congeneric species by a combination of the following characters: tip of maxillary barbel reaching to posterior edge of orbit; forehead horn absent; eye absent (or highly reduced) and tip of pectoral fins not significantly extending beyond the base of the pelvic fin. Molecular evidence, based on the mitochondrial cytochrome b (cytb) gene, further supports the validity of the species and also reveals its close relationship with S. cyphotergous, S. multipunctatus, S. punctatus and S. sanxiaensis. In addition, the new species faces a high risk of extinction, underscoring the urgency for habitat protection measures within its limited range.
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