| Metzia | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Cypriniformes |
| Family: | Cyprinidae |
| Subfamily: | Xenocyprinae |
| Genus: | Metzia D. S. Jordan & W. F. Thompson, 1914 |
| Type species | |
| Acheilognathus mesembrinum Jordan & Evermann, 1902 | |
| Synonyms | |
Rasborinus Oshima, 1920 | |
Metzia is a genus of cyprinid fish that is found in eastern Asia. The genus is named in honor of the American ichthyologist Charles William Metz of Stanford University. [1]
There are currently 8 recognized species in this genus:
Cyprinidae is a family of freshwater fish commonly called the carp or minnow family, including the carps, the true minnows, and their relatives the barbs and barbels, among others. Cyprinidae is the largest and most diverse fish family, and the largest vertebrate animal family overall, with about 3,000 species; only 1,270 of these remain extant, divided into about 200 valid genera. Cyprinids range from about 12 mm (0.5 in) in size to the 3 m (9.8 ft) giant barb. By genus and species count, the family makes up more than two-thirds of the ostariophysian order Cypriniformes. The family name is derived from the Greek word kyprînos.
Cypriniformes is an order of ray-finned fish, which includes many families and genera of cyprinid fish, such as barbs, gobies, loaches, botias, and minnows. Cypriniformes is an “order-within-an-order”, placed under the superorder Ostariophysi—which is also made up of cyprinid, ostariophysin fishes. The order contains 11-12 families, over 400 genera, and more than 4,250 named species; new species are regularly described, and new genera are recognized frequently. Cyprinids are most diverse in South and Southeast Asia, but are entirely absent from Australia and South America. At 112 years old, the longest-lived cypriniform fish documented is the bigmouth buffalo.
Acrossocheilus is a genus of ray-finned fishes in the family Cyprinidae, native to freshwater in China, Taiwan, Laos, and Vietnam. They are fairly small, no more than 30 cm (1 ft) in standard length.
Tanichthys is a genus of freshwater fish in the carp family (Cyprinidae) of order Cypriniformes. They are native to rivers and streams in China and Vietnam. Until recently, the type species, T. albonubes, was the only one known. In 2001, however, Freyhof and Herder described a new and very similar species, T. micagemmae, from the Ben Hai River in Vietnam and V. H. Nguyen & S. V. Ngô described a third species from Vietnam.
Rasbora is a genus of fish in the family Cyprinidae. They are native to freshwater habitats in South and Southeast Asia, as well as southeast China. A single species, R. gerlachi, is only known from an old specimen that reputedly originated from Africa (Cameroon), but this locality is considered doubtful. They are small, up to 17 cm (6.7 in) long, although most species do not surpass 10 cm (4 in) and many have a dark horizontal stripe.
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.
Garra is a genus of fish in the family Cyprinidae. These fish are one example of the "log suckers", sucker-mouthed barbs and other cyprinids commonly kept in aquaria to keep down algae. The doctor fish of Anatolia and the Middle East belongs in this genus. The majority of the more than 160 species of garras are native to Asia, but about one-fifth of the species are from Africa.
Onychostoma is a genus of cyprinid fish found in eastern Asia.
Schistura is a genus of fish in the stone loach family Nemacheilidae native to the streams and rivers of the southern and eastern Asia. Some of these species are troglobitic.
Triplophysa is a genus of fish in the family Nemacheilidae found mainly in and around the Qinghai-Tibet Plateau in China, as well as inland waters of the larger part of central Asia. They can be distinguished from other genera of Nemacheilidae by marked sexual dimorphism, including the development of nuptial tubercles on breeding males. Currently, the genus is a mixed assemblage of species. Some lineages have been identified and treated as subgenera, but as Wikipedia follows Fishbase for fish species all but Hedinichthys have been treated as subgenera in Wikipedia, although Kottelat in his revision of the loaches did recognise them as valid. FishBase, however, includes these in Triplophysa without specifying subgenera and treats the names given by Kottelat as synonyms.
Danio erythromicron, often known as emerald dwarf danio and emerald dwarf rasbora, is a species of cyprinid fish which is endemic to Inle Lake in Myanmar.
Aphyocypris is a genus of cyprinid fishes consisting of eight species, all of which are restricted to East Asia.
Gymnocypris is a genus of fish in the family Cyprinidae endemic to China.
Microphysogobio is a genus of freshwater fish in the family Cyprinidae native to East Asia.
Saurogobio is a genus of cyprinid fish found in eastern Asia.
Paraqianlabeo lineatus is a species of fish in the family Cyprinidae found in Yangtze river basin in Guizhou Province, South China. It is the type species of the genus Paraqianlabeo.
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.
Xenocyprinae, is a contentious subfamily of the family Cyprinidae, the carp and minnow family, originally from eastern Asia.
Metzia bounthobi is a species of cyprinid in the genus Metzia. It inhabits Laos and has a maximum length of 6.1 centimetres (2.4 in).
Metzia parva is a species of cyprinid in the genus Metzia. It inhabits the Hongshui River in southern China and has a maximum length of 5.8 centimetres (2.3 in).
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