Sinocyclocheilus longicornus inhabits a completely dark cave in southwestern Guizhou province in China. Live adult male paratype of Sinocyclocheilus longicornus. Image credit: Xu et al., doi: 10.3897/zookeys.1141.91501. Sinocyclocheilus is a genus of freshwater fish in the family Cyprinidae endemic to China. First described in 1936, it comprises 76 valid species, of which 71 species are grouped into five species groups. Almost members of the genus...
