The Ozark cavefish, Amblyopsis rosae, is a small subterranean freshwater fish endemic to the United States. It has been listed as a threatened species in the US since 1984; the IUCN currently lists the species as Near Threatened, though this was previously listed as Vulnerable between 1986 and 1996. It is listed as Endangered and Threatened by the Missouri Department of Conservation.
Sinocyclocheilus is a genus of freshwater fish in the family Cyprinidae endemic to China, where only found in Guangxi, Guizhou and Yunnan. 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. Several species have an unusual hunchbacked appearance and some of the cave-dwellers have a "horn" on the back, 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 (9.1 in) 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.
Caecobarbus geertsi, the African blind barb or Congo blind barb, is a species of cyprinid fish. This threatened cavefish is only known from Democratic Republic of the Congo, and it is the only member of the monotypic genus Caecobarbus. George Albert Boulenger described this fish in 1921 and it apparently lacks any close relatives in the Congo region.
The eyeless golden-line fish or blind golden-line barbel is a species of ray-finned fish in the family Cyprinidae. It is a cave-dwelling, blind species only known from the Yiliang County, Yunnan, China. Its maximum length is 113 mm (4.4 in) SL.
The hyaline fish is a species of ray-finned fish in the family Cyprinidae. This threatened species is found only in Yunnan in China. Like many other cavefish, it lacks scales, pigmentation and external eyes. The first recorded description of an obligate cavefish involved this species, when mentioned in 1540 in the travel notes of Yingjing Xie, a local governor of Guangxi.
Yunnanilus macrogaster is a hypogean species of stone loach endemic to China. This species is endemic to the endorheic drainage system which feeds the Datangzi Marsh in Luoping County, Yunnan, the marsh has been formed by the outflow of a stream from its underground course. It is a demersal species and the waters where it was found were densely vegetated, it feeds on worms and insects. It is sympatric with Yunnanilus niger and Y, paludosus, forming a small species flock. It lays eggs which it does not guard.
Glaphyropoma is a genus of small pencil catfishes native to Bahia in Brazil.
Xiurenbagrus is a genus of torrent catfishes of the family Amblycipitidae. It includes three species.
Etheostoma osburni, the candy darter or finescale saddled darter, is a species of fish in the family Percidae, a member of the group known as darters. This species is endemic to the eastern United States where it is known only from the Kanawha River system in the states of Virginia and West Virginia.
Cavefish or cave fish is a generic term for fresh and brackish water fish adapted to life in caves and other underground habitats. Related terms are subterranean fish, troglomorphic fish, troglobitic fish, stygobitic fish, phreatic fish and hypogean fish.
Eigenmannia vicentespelaea is a species of weakly electric knifefish in the family Sternopygidae. Native to the São Domingos karst area in central Brazil, it is the only known knifefish to exclusively inhabit caves. Measuring up to 12 cm (4.7 in) long, E. vicentespelaea can be distinguished from its relatives by its translucent body and reduced or absent eyes. As some individuals retain well-developed eyes, this fish may have colonized caves only recently in evolutionary time.
Tian'e is a county of northwestern Guangxi, China, located on the upper reaches of the Hongshui River and bordering Guizhou province to the northwest. It is under the administration of the prefecture-level city of Hechi.
Donglan County is a county of northwest Guangxi, China. It is under the administration of Hechi City.
Sinocyclocheilus donglanensis is a species of cave fish in the family Cyprinidae. It is endemic to Guangxi province in southern China, and only known from a subterranean tributary of the Hongshui River, a tributary of the Pearl River. Its specific name donglanensis refers to the Donglan County where its type locality is located. It is not known from elsewhere.
The crossed-fork back golden-line fish is a species of blind cave fish in the family Cyprinidae. It is endemic to the Guangxi province in southern China, and only known from an underground stream in Tian'e County.
Sinocyclocheilus yimenensis is a species of cave fish in the family Cyprinidae. It is endemic to Yunnan province in southern China. Its specific name yimenensis refers to the Yimen County where its type locality is.
Sinocyclocheilus yishanensis is a species of cave fish in the family Cyprinidae. It is endemic to Guangxi province in southern China and known from the Liu River, a tributary of the Pearl River. Its specific name yishanensis refers to the Yishan County where its type locality is.
The greenbreast darter is a species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. It is endemic to the southeastern United States, where it occurs in the systems of the Alabama River and the Black Warrior River. It is an inhabitant of streams and rocky riffles of creeks and smaller rivers. This species can reach a length of 7.9 cm (3.1 in), though most only reach about 5 cm (2.0 in).
Sinocyclocheilus jinxiensis is a species of cavefish in the family Cyprinidae endemic to Xiaolong Spring in Jinxi County, Guangxi, China. In 2016, it was proposed that this species should be moved to its own genus Pseudosinocyclocheilus.
Sinocyclocheilus huangtianensis is a species of cyprinid fish in the genus Sinocyclocheilus. It is found in a cave of the Hejiang River in Guangxi, China.
