Sinocyclocheilus donglanensis | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
Order: | Cypriniformes |
Family: | Cyprinidae |
Subfamily: | Cyprininae |
Genus: | Sinocyclocheilus |
Species: | S. donglanensis |
Binomial name | |
Sinocyclocheilus donglanensis | |
Sinocyclocheilus donglanensis (Donglan golden-line barbel [3] ) is a species of cave fish in the family Cyprinidae. [1] [2] [3] [4] 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. [2] Its specific name donglanensis refers to the Donglan County where its type locality is located. [1] It is not known from elsewhere. [3]
Sinocyclocheilus donglanensis grows to 12.4 cm (4.9 in) standard length; mean length of five individuals was 8.3 cm (3.3 in). The head is compressed and has developed eyes. The mouth has two barbels and is slightly inferior, with the upper jaw that protrudes slightly beyond the lower one. The body is compressed and completely scaled. The highest body depth (about 31% of standard length) occurs exactly at the dorsal fin insertion. The lateral line is complete and curved. In preservative, the colour of the back is dark brownish; the abdomen is light grayish. Pelvic and anal fins are light yellowish. [1]
It resembles morphologically most closely Sinocyclocheilus yishanensis known from the Liu River, another river in the Pearl River system. Both have "normal" body shape, in contrast to some other Sinocyclocheilus species showing humps or horns. [1]
Virtually nothing is known about the ecology and behaviour of this species. It shares its habitat (and type locality) with another cave fish species, Sinocyclocheilus altishoulderus . [1] [3]
The type locality, near Gongping Village, Taiping Town, Donglan County, is a subterranean river some 10–20 metres inside from the mouth of a small cave. During the rainy season, the water can extend outside the cave to form a small lake. [1] The habitat is potentially threatened by water extraction, waste disposal and pesticide pollution, and landscape alterations in general. [3]
The Amblycipitidae are a family of catfishes, commonly known as torrent catfishes. It includes three genera, Amblyceps, Liobagrus, and Xiurenbagrus, and about 36 species.
Schizothorax plagiostomus is a species of ray-finned fish in the genus Schizothorax. Schizothorax plagiostomus locally known as khont, snow trout, snow carp, snow barbel and Swati fish has an elongated sub cylindrical body with short, blunt and slightly prognathous upper jaw. Ventral surface of head and anterior part of body flattish, short, somewhat cone shaped and blunt. Snout usually smooth covered with warys in male. Interorbital space broad and flat. Mouth inferior, wide and slightly arched; lips fleshy and continuous, marginally sharply attenuated, lower lip papillae and reflected from jaw, margin of lower lip sharp, covered with firm and hard horny cartilage; a strip of papillae labial plate at chin present. Barbless two pairs. Pharyngeal teeth in three rows. Dorsal fin inserted about opposite to pelvic fins, its last undivided ray osseous, strong and serrated posterior, short than head. Caudal fin deeply emarginated. Scales very small and elliptical; lipids irregular.
Barbels are a group of carp-like freshwater fish, almost all of the genus Barbus. They are usually found in gravel and rocky-bottomed moderate-flowing rivers with high dissolved oxygen content, known as the Barbel zone. A typical adult barbel can range from 25 to 240 cm in length and weigh between 200 g (7.1 oz) and 200 kg (440 lb), depending on species.
Sorubim is a small genus of long-whiskered catfish native to tropical South America. A number of characteristics allows the differentiation of each species in the genus. Sorubim species are important food fish in South America and are highly significant to fisheries of some areas; however, harvests of these fish are not identified as much as other, more popular food fishes such as Colossoma, Arapaima, and Brachyplatystoma. Some species of this family are popular aquarium fish.
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. 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.
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.
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.
Xiurenbagrus is a genus of torrent catfishes of the family Amblycipitidae. It includes three species.
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 21 cm (8.3 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.
Donglan County is a county of northwest Guangxi, China. It is under the administration of Hechi City.
Sinocyclocheilus altishoulderus is a species of cave fish in the family Cyprinidae. It is endemic to Guangxi province in southern China, and only known from a cave in Donglan County, from a subterranean tributary of the Hongshui River, a tributary of the Pearl River.
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.
Schizothorax plagiostomus is a species of ray-finned fish in the genus Schizothorax. Schizothorax plagiostomus locally known as khont, snow trout, snow carp, snow barbel and Swati fish has an elongated sub cylindrical body with short, blunt and slightly prognathous upper jaw. Ventral surface of head and anterior part of body flattish, short, somewhat cone shaped and blunt. Snout usually smooth covered with warys in male. Interorbital space broad and flat. Mouth inferior, wide and slightly arched; lips fleshy and continuous, marginally sharply attenuated, lower lip papillae and reflected from jaw, margin of lower lip sharp, covered with firm and hard horny cartilage; a strip of papillae labial plate at chin present. Barbless two pairs. Pharyngeal teeth in three rows. Dorsal fin inserted about opposite to pelvic fins, its last undivided ray osseous, strong and serrated posterior, short than head. Caudal fin deeply emarginated. Scales very small and elliptical; lipids irregular.
Cophecheilus bamen is a species of fish in the family Cyprinidae, the carps and minnows. It was described in 2011 from a tributary of the Zou-Jiang, a river in the Pearl River drainage in Jingxi County, Guangxi, China. The species name bamen is from Ba Men, the local common name for this and similar fish.
Sinocyclocheilus huangtianensis is a species of cyprinid fish. It is found in a cave of the Hejiang River in Guangxi, China.
Huigobio exilicauda is a species of cyprinid fish found in the Pearl River basin in China. All of the specimens were collected in the Pearl River basin in Guangdong Province, China, in 1976. It is sometimes considered an ambiguous synonym of Huigobio chenhsienensis. Differs from Huigobio chenhsienensis in that it has a thin caudal peduncle ; and a narrower interorbital gap than eye.
Triplophysa anshuiensis is a species of stone loach in the family Nemacheilidae. It is endemic to Lingyun County in Guangxi, China, where it lives in a karst cave.