''Schizopygopsis'' is a genus of

cyprinid Cyprinidae is a family of freshwater fish commonly called the carp or minnow family. It includes the carps, the true minnows, and relatives like the barbs and barbels. Cyprinidae is the largest and most diverse fish family and the largest verte ...

fish. Most species are

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

to river basins in the

Himalaya The Himalayas, or Himalaya (; ; ), is a mountain range in Asia, separating the plains of the Indian subcontinent from the Tibetan Plateau. The range has some of the planet's highest peaks, including the very highest, Mount Everest. Over 100 ...

s and

Qinghai–Tibet Plateau The Tibetan Plateau (, also known as the Qinghai–Tibet Plateau or the Qing–Zang Plateau () or as the Himalayan Plateau in India, is a vast elevated plateau located at the intersection of Central Asia, Central, South Asia, South and East Asi ...

of China, but ''S. stoliczkai'' extends into the highlands of Afghanistan, Iran, northern India,

Kyrgyzstan Kyrgyzstan,, pronounced or the Kyrgyz Republic, is a landlocked country in Central Asia. Kyrgyzstan is bordered by Kazakhstan to the north, Uzbekistan to the west, Tajikistan to the south, and the People's Republic of China to the east. ...

, Pakistan and

Tajikistan Tajikistan (, ; tg, Тоҷикистон, Tojikiston; russian: Таджикистан, Tadzhikistan), officially the Republic of Tajikistan ( tg, Ҷумҳурии Тоҷикистон, Jumhurii Tojikiston), is a landlocked country in Centr ...

.Delin Qi, Songchang Guo, Yan Chao, Qinghui Kong, Changzhong Li, Mingzhe Xia,Baosheng Xie and Kai Zhao (2015). The biogeography and phylogeny of schizothoracine fishes (Schizopygopsis) in the Qinghai-Tibetan Plateau. Zoologica Scripta 44(5). ''S. younghusbandi'' is up to almost in

total length Fish measurement is the measuring of individual fish and various parts of their anatomies. These data are used in many areas of ichthyology, including taxonomy and fisheries biology. Overall length * Standard length (SL) is the length of a fish ...

, but the remaining species generally only reach about two-thirds of that size. Similar to '' Platypharodon'', ''Schizopygopsis'' have a horny sheath on the lower jaw and spoon-shaped teeth that they use to scrape off

periphyton Periphyton is a complex mixture of algae, cyanobacteria, heterotrophic microbes, and detritus that is attached to submerged surfaces in most aquatic ecosystems. The related term Aufwuchs (German "surface growth" or "overgrowth") refers to the col ...

and

algae Algae (; singular alga ) is an informal term for a large and diverse group of photosynthetic eukaryotic organisms. It is a polyphyletic grouping that includes species from multiple distinct clades. Included organisms range from unicellular mic ...

from stones, but they will also eat

benthic The benthic zone is the ecological region at the lowest level of a body of water such as an ocean, lake, or stream, including the sediment surface and some sub-surface layers. The name comes from ancient Greek, βένθος (bénthos), meaning "t ...

invertebrates.Tang, Y.; C. Li; K. Wanghe; C. Feng; C. Tong; F. Tian; and K. Zhao (2019). Convergent evolution misled taxonomy in schizothoracine fishes (Cypriniformes: Cyprinidae). Molecular Phylogenetics and Evolution 134: 323–337 Qi, D. (2016). Fish of the Upper Yellow River. Pp. 233–252 in: G.J. Brierley et al. (eds.). Landscape and Ecosystem Diversity, Dynamics and Management in the Yellow River Source Zone. Springer Geography. ''Schizopygopsis'' is a part of the schizothoracines (snowtrout and allies), which also includes the genera '' Aspiorhynchus'', ''

Chuanchia ''Chuanchia labiosa'' is a species of cyprinid fish that is only found in the upper reaches of the Yellow River basin in the Qinghai–Tibet Plateau of China, where it mostly inhabits slow-flowing cold waters at altitudes above . It is the only ...

'', ''

Diptychus ''Diptychus'' is a genus of cyprinid freshwater fish, consisting of two species found in Himalaya and the Tibetan Plateau of China, India, Nepal and Pakistan, ranging west to the Tien Shan Mountains and Central Asia.Li, G.; Y. Tang; R. Zhang; and ...

'', ''

Gymnodiptychus ''Gymnodiptychus'' is a genus of cyprinid fish found in freshwater habitats in the highlands of China, Kyrgyzstan and Tajikistan.Kustareva, L.A., and A.M. Naseka (2015). Fish diversity in Kyrgyzstan: Species composition, fisheries and management ...

'', ''

Gymnocypris ''Gymnocypris'' is a genus of fish in the family Cyprinidae endemic to China. Species There are currently 10 recognized species in this genus: * ''Gymnocypris chilianensis'' S. C. Li & S. Y. Chang, 1974 * ''Gymnocypris chui'' T. L. Tchang, T ...

'', ''

Oxygymnocypris ''Oxygymnocypris stewartii'' is a species of cyprinid fish endemic to Tibet and occurs in the Yarlung Tsangpo River (=upper Brahmaputra) and its tributaries at altitudes above in the Qinghai-Tibet Plateau. It is the only species in its genus. ...

'', ''Platypharodon'', ''

Ptychobarbus ''Ptychobarbus'' is a genus of cyprinid fish that is found in rivers, streams and lakes in the Himalayas and Tibetan Plateau of China, India, Nepal and Pakistan, extending into the highlands of Afghanistan. They reach up to in weight and about ...

'', ''

Schizopyge ''Schizopyge'' is a genus of cyprinid freshwater fish found in Pakistan and the northwestern part of India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the sec ...

'' and ''

Schizothorax ''Schizothorax'' is a genus of cyprinid fish found in southern and western China, through northern South Asia (Himalaya) and Central Asia, to Iran, with a single species, ''S. prophylax'', in Turkey.Yang, J.; J.X. Yang; and X.Y. Chen (2012). A re ...

''.Qi, D.; Y. Chao; S. Guo; L. Zhao; T. Li; F. Wei; and X. Zhao (2012). Convergent, Parallel and Correlated Evolution of Trophic Morphologies in the Subfamily Schizothoracinae from the Qinghai-Tibetan Plateau. PLoS ONE 7(3): e34070.

Species

There are currently eight recognized species in this genus: * ''

Schizopygopsis anteroventris ''Schizopygopsis anteroventris'' is a species of ray-finned fish endemic to China. It occurs in the upper Mekong and Salween River drainages in Tibet Tibet (; ''Böd''; ) is a region in East Asia, covering much of the Tibetan Plateau ...

'' Wu & Tsao, 1989 * ''

Schizopygopsis kessleri ''Schizopygopsis kessleri'' is a species of ray-finned fish endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are ...

'' Herzenstein, 1891 * ''

Schizopygopsis kialingensis ''Schizopygopsis kialingensis'' is a species of ray-finned fish. It is endemic to the Jialing River in Gansu Province Gansu (, ; alternately romanized as Kansu) is a province in Northwest China. Its capital and largest city is Lanzhou, in th ...

'' W. X. Tsao & C. L. Tun, 1962 * ''

Schizopygopsis malacanthus ''Schizopygopsis malacanthus'' is a species of ray-finned fish endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that a ...

'' Herzenstein, 1891 * ''

Schizopygopsis pylzovi ''Schizopygopsis pylzovi'' is a species of river-dwelling fish in the family Cyprinidae. It is endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or oth ...

Kessler Kessler or Keßler (in German) may refer to: * Kessler (automobile), an American automobile made 1921–1922 * Kessler (name), people named Kessler * ''Kessler'' (TV series), a British television series from 1981 * Kessler, Ohio, an unincorporat ...

, 1876 * ''

Schizopygopsis stoliczkai The false osman (''Schizopygopsis stoliczkai'') is an Asian cyprinid freshwater fish living in the highlands of Afghanistan, southwestern China, Iran, northern India, Kyrgyzstan, Pakistan and Tajikistan.Kustareva, L.A., and A.M. Naseka (2015). Fis ...

'' Steindachner, 1866 (false osman) * ''

Schizopygopsis thermalis ''Schizopygopsis thermalis'' is a species of ray-finned fish endemic to China. It occurs in the upper Salween River drainage in Tibet Tibet (; ''Böd''; ) is a region in East Asia, covering much of the Tibetan Plateau and spanning abo ...

'' Herzenstein, 1891 * ''

Schizopygopsis younghusbandi ''Schizopygopsis younghusbandi'' is a species of ray-finned fish endemic to Tibet. It occurs in the Yarlung Tsangpo River (=upper Brahmaputra) drainage and in endorheic lakes An endorheic basin (; also spelled endoreic basin or endorreic ba ...

Regan The family name Regan, along with its cognates O'Regan, O Regan, Reagan, and O'Reagan, is an Anglicized form of the Irish surname Ó Riagáin or Ó Ríogáin, from Ua Riagáin. The meaning is likely to have originated in ancient Gaelic ''ri'' ...

, 1905

References

Cyprinidae genera Cyprinid fish of Asia {{Cyprininae-stub