Sinocyclocheilus

Sinocyclocheilus is a genus of freshwater fish in the family Cyprinidae that is endemic to Guangxi, Guizhou and Yunnan in China. Almost all of its species live in or around caves and most of these have adaptions typical of cavefish such as a lack of scales, lack of pigmentation and reduced eyes (some are completely blind). Several species have an unusual hunchbacked appearance and some of the cave-dwellers have a "horn" on the back (above the forehead), the function of which is unclear. In contrast, the Sinocyclocheilus species that live aboveground, as well as a few found underground, show no clear cavefish adaptions. They are relatively small fish reaching up to 23 cm in length. The individual species have small ranges and populations, leading to the status of most of the evaluated species as threatened. Many species populations in the genus have yet to be evaluated by the IUCN.

The type species is S. tingi. The name is derived from the Latin word sino, meaning "from China", and the Greek word kyklos, meaning "circle", and the Greek word cheilos, meaning "lip".

Species
There are 69 recognized species in this genus. Several others are now considered synonyms and jinxiensis, traditionally placed in this genus, was moved to the monotypic Pseudosinocyclocheilus in 2016.


 * Sinocyclocheilus altishoulderus (W. X. Li & J. H. Lan, 1992)
 * Sinocyclocheilus anatirostris R. D. Lin & Z. F. Luo, 1986 (Duck-billed golden-line fish)
 * Sinocyclocheilus angularis J. Z. Zheng & J. Wang, 1990 (Golden-line angelfish)
 * Sinocyclocheilus angustiporus C. Y. Zheng & J. H. Xie, 1985
 * Sinocyclocheilus anophthalmus Y. R. Chen, X. L. Chu, Z. Y. Luo & J. Y. Wu, 1988 (Eye-less golden-line fish)
 * Sinocyclocheilus anshuiensis X. Gan, T. J. Wu, M. L. Wei & J. Yang, 2013
 * Sinocyclocheilus aquihornes W. X. Li & H. F. Yang, 2007
 * Sinocyclocheilus biangularis D. Wang, 1996
 * Sinocyclocheilus bicornutus D. Z. Wang & J. W. Liao, 1997
 * Sinocyclocheilus brevibarbatus Y. H. Zhao, J. H. Lan & C. G. Zhang, 2009
 * Sinocyclocheilus brevifinus J. Li, X. H. Li & Mayden, 2014
 * Sinocyclocheilus brevis J. H. Lan & J. X. Chen, 1992
 * Sinocyclocheilus broadihornes W. X. Li & W. N. Mao, 2007
 * Sinocyclocheilus cyphotergous (D. Y. Dai, 1988)
 * Sinocyclocheilus donglanensis Y. H. Zhao, K. Watanabe & C. G. Zhang, 2006
 * Sinocyclocheilus flexuosdorsalis D. G. Zhu & Y. Zhu, 2012
 * Sinocyclocheilus furcodorsalis Y. R. Chen, J. X. Yang & J. H. Lan, 1997 (Crossed fork-back golden-line fish)
 * Sinocyclocheilus gracilicaudatus Y. H. Zhao & C. G. Zhang, 2014
 * Sinocyclocheilus gracilis J. Li & X. H. Li, 2014
 * Sinocyclocheilus grahami (Regan, 1904) (Golden-line barbel)
 * Sinocyclocheilus guanduensis (Li & Xiao, 2004)
 * Sinocyclocheilus guanyangensis Y. Q. Chen, C. L. Peng & E. Zhang, 2016
 * Sinocyclocheilus guilinensis C. S. Ji, 1985
 * Sinocyclocheilus guishanensis W. X. Li, 2003
 * Sinocyclocheilus hei W. X. Li & H. Xiao, 2004
 * Sinocyclocheilus huanglongdongensis Li & Xiao, 2004
 * Sinocyclocheilus huaningensis W. X. Li, 1998
 * Sinocyclocheilus huanjiangensis T. J. Wu, X. Gan & W. X. Li, 2010
 * Sinocyclocheilus hugeibarbus W. X. Li & J. C. Ran, 2003
 * Sinocyclocheilus huizeensis C. Cheng, X. F. Pan, X. Y. Chen, J. Y. Li, L. Ma & J. X. Yang, 2015
 * Sinocyclocheilus hyalinus Y. R. Chen & J. X. Yang, 1993 (Hyaline fish)
 * Sinocyclocheilus jii C. G. Zhang & D. Y. Dai, 1992
 * Sinocyclocheilus jiuxuensis W. X. Li & J. H. Lan, 2003
 * Sinocyclocheilus lateristriatus W. X. Li, 1992
 * Sinocyclocheilus liboensis Li, Chen & Ran, 2004
 * Sinocyclocheilus lingyunensis W. X. Li, H. Xiao & Z. F. Luo, 2000
 * Sinocyclocheilus longibarbatus D. Z. Wang & Y. Y. Chen, 1989
 * Sinocyclocheilus longicornus Cheng Xu, Tao Luo, Jia-Jun Zhou, Li Wu, Xin-Rui Zhao, Hong-Fu Yang, Ning Xiao, Jiang Zhou, 2023
 * Sinocyclocheilus longifinus W. X. Li, 1996
 * Sinocyclocheilus luolouensis J. H. Lan, 2013
 * Sinocyclocheilus luopingensis W. X. Li & J. N. Tao, 2002
 * Sinocyclocheilus macrocephalus W. X. Li, 1985
 * Sinocyclocheilus macrolepis D. Z. Wang & Y. Y. Chen, 1989
 * Sinocyclocheilus macrophthalmus C. G. Zhang & Y. H. Zhao, 2001
 * Sinocyclocheilus macroscalus Shen et al., 2000
 * Sinocyclocheilus maculatus W. X. Li, 2000
 * Sinocyclocheilus maitianheensis W. X. Li, 1992
 * Sinocyclocheilus malacopterus X. L. Chu & G. H. Cui, 1985
 * Sinocyclocheilus mashanensis T. J. Wu, Z. P. Liao & W. X. Li, 2010
 * Sinocyclocheilus microphthalmus G. L. Li, 1989 (Small-eye golden-line fish)
 * Sinocyclocheilus multipunctatus (Pellegrin, 1931)
 * Sinocyclocheilus oxycephalus W. X. Li, 1985
 * Sinocyclocheilus purpureus W. X. Li, 1985
 * Sinocyclocheilus qiubeiensis W. X. Li, 2002
 * Sinocyclocheilus qujingensis W. X. Li, W. N. Mao & Z. M. Lu, 2002
 * Sinocyclocheilus rhinocerous W. X. Li & J. N. Tao, 1994
 * Sinocyclocheilus robustus J. X. Chen & Z. F. Zhao, 1988
 * Sinocyclocheilus tianlinensis J. Zhao, C. G. Zhang & A. Y. He, 2004
 * Sinocyclocheilus tileihornes W. N. Mao, Z. M. Lu & W. X. Li, 2003
 * Sinocyclocheilus tingi P. W. Fang, 1936
 * Sinocyclocheilus wui W. X. Li & L. An, 2013
 * Sinocyclocheilus wumengshanensis W. X. Li, W. N. Mao & Z. M. Lu, 2003
 * Sinocyclocheilus xichouensis X. F. Pan, L. Li, J. X. Yang & X. Y. Chen, 2013
 * Sinocyclocheilus xunlensis J. H. Lan, Y. H. Zhao & C. G. Zhang, 2004
 * Sinocyclocheilus yangzongensis S. L. Tsu & Y. R. Chen, 1977
 * Sinocyclocheilus yaolanensis Zhou, Li & Hou, 2009
 * Sinocyclocheilus yimenensis W. X. Li & H. Xiao, 2005
 * Sinocyclocheilus yishanensis W. X. Li & J. H. Lan, 1992