Oreonectes retrodorsalis | |
---|---|
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
Order: | Cypriniformes |
Family: | Nemacheilidae |
Genus: | Oreonectes |
Species: | O. retrodorsalis |
Binomial name | |
Oreonectes retrodorsalis | |
Synonyms | |
Yunnanilus retrodorsalis(Lan, Yang & Chen, 1995) |
Oreonectes retrodorsalis is a species of stone loach. This cavefish is found only in Guangxi in China. [2] Some authorities places this species in the genus Yunnanilus rather than Oreonectes. [3] The specific name is a compound of the Latin words retro meaning back or past and dorsalis meaning "the back", referring to the placement of the dorsal fin closer to base of the caudal fin than to the tip of snout. [4]
Oreonectes retrodorsalis grows to 3.8 cm (1.5 in) standard length. [1]
Cypriniformes is an order of ray-finned fish, including the carps, minnows, loaches, and relatives. Cypriniformes is an Order within the Superorder Ostariophysi consisting of "Carp-like" Ostariophysins. This order contains 11-12 families, although some authorities have designated as many as 23, over 400 genera, and more than 4,250 species, with new species being described every few months or so, and new genera being recognized frequently. They are most diverse in southeastern Asia, and are entirely absent from Australia and South America. At 112 years old, the longest-lived cypriniform fish documented is the bigmouth buffalo.
Oreonectes is a genus of fish in the family Nemacheilidae found in the rivers and cave of Asia. Many of these species are troglobitic.
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 is does not guard.
Botiidae is a family of cypriniform ray-finned fishes from South, Southeast, and East Asia. Until recently they were placed in the true loach family Cobitidae, until Maurice Kottelat revised the loaches and re-elevated this taxon to family rank in 2012. The family includes about 56 species.
Schistura hingi is a species of ray-finned fish in the most speciose genus of stone loaches, Schistura. It occurs in the Pearl River basin of southeastern China and the coastal drainages in central Vietnam, it probably also occurs in the costal drainages of northern Vietnam too where it inhabits medium-sized rivers and streams where a substrate of rocks and gravel lies in riffles. The specific name honours a specimen collector, Ah Hing, whose efficiency in collecting for the botanist-ornithologist Geoffrey Herklots of Hong Kong University, Hing's patience and skill enabled Herre "to get many specimens”.
Schistura nicholsi is a species of ray-finned fish, a stone loach, in the genus Schistura. It is found in the Mekong basin of north eastern Thailand, Laos and it is also likely to be found in Cambodia. It occurs in shallow riffles with moderate to fast flows. Human modification of the rivers' morphology through such activities as logging and agriculture are affecting this species range. However, its distribution covers a wide geographic range and it is assessed as Least Concern by the IUCN. The specific name honors John Treadwell Nichols (1883-1958) who was curator of fishes at the American Museum of Natural History and who made an important contribution to the ichthyology of China, and especially to the knowledge of loaches.
Schistura poculi is a species of ray-finned fish, a stone loach, in the genus Schistura. This species of stone loach is currently thought to occur in the basins of the Mekong, Salween and Chao Praya rivers in Myanmar, Thailand and Laos. However, these may refer to more than one species, in which case the name S. poculi belongs to the population in the Chao Praya. It can be found in streams with moderately fast to fast currents among riffles where there are substrates which vary from gravel to stone. The specific name poculi means "bowl" and refers to the type locality, Doi Angkon in Thailand with angkon meaning "crow's bowl".
Schistura prashadi is a species of ray-finned fish, a stone loach, in the genus Schistura. Some authorities place it in the genus Physoschistura It is known from just three localities in the Chindwin River drainage in Manipur, India. It is a benthic species of hill streams, preferring well oxygenated, clear, flowing water.
Yunnanilus analis is a species of ray-finned fish, a stone loach, in the genus Yunnanilus. The type locality is Xingyun Lake in Yunnan, southern China. The specific name analis means "of the anus" and refers to the six branched rays in the anal fin, a unique feature among the species classified under Yunnanilus.
Yunnanilus chui is a species of ray-finned fish, a stone loach, in the genus Yunnanilus. The specific name honours the ichthyologist Chu Xin-Luo. The type locality for this species is Fuxian Lake at Haikou, Hainan in China.
Yunnanilus longibulla is a species of ray-finned fish, a stone loach, in the genus Yunnanilus. The type locality for this species is Chenghai Lake in Yunnan. The specific name longibulla means "long bubble" and refers to the elongated shape of the swim bladder compared to closely related species.
Yunnanilus nanpanjiangensis is a species of ray-finned fish, a stone loach, in the genus Yunnanilus. It is endemic to China and uts type locality is near Agang Town, Luoping County, Yunnan and the specific name refers to the Nanpanjiang River.
Yunnanilus obtusirostris is a species of ray-finned fish, a stone loach in the genus Yunnanilus. Its type locality is the West Dragon Spring, which flows into Fuxian Lake in Chengjiang County, Yunnan. It mau be a species in the genus Heminoemacheilus rather than Yunnanilus. The specific name is a compound of the Latin rostrum meaning a "beak" and obtusus meaning "blunt", this refers to the species' short snout.
Yunnanilus pulcherrimus is a species of ray-finned fish, a stone loach, in the genus Yunnanilus. It is found in the Hongshuihe River, part of the Xijiang River basin in China, with the type locality in Du'an County, Guangxi. The specific name pulcherrimus means most beautiful and is a reference to the “unique” banded color pattern ofthin vertical stripes crossing a wide lateral band, when compared to related species.
Schistura kodaguensis is a species of ray-finned fish, a stone loach, in the genus Schistura. This species has been recorded from a single stream with a swift current and gravel bottom in the Cauvery River system in Karnataka, India. The specific name is derived from Kodagu District where the type specimen was collected.
Triplophysa rotundiventris is a species of ray-finned fish in the genus Qinghaichthys, although these stone loaches are placed in the genus Qinghaichthys by some authorities. It was described from a specimens taken in the Jiegu He, a tributary of upper Yangtze in the Yushu Tibetan Autonomous Prefecture, China.
Triplophysa siluroides is a large species of stone loach, which is endemic to the upper parts of the Yellow River basin in the Chinese provinces of Qinghai, Gansu and Sichuan.
The Nemacheilidae, or stone loaches, are a family of cypriniform fishes that inhabit stream environments, mostly in Eurasia, with one genus, Afronemacheilus found in Africa. The family includes about 790 species.
Troglonectes is a genus of troglobitic fish in the family Nemacheilidae, native to caves of Asia. Fishbase and other authorities place these species in the genus Oreonectes.
Yunnanilus qujinensis is a species of freshwater ray-finned fish, a stone loach which is endemic to China. The species was described from specimens collected at a spring into the Hujiafen Reservoir in the Nanpanjiang River drainage near Qujing in Yunnan, its Specific name (zoology) refers to the city of Qujin. It has not yet been included in FishBase.