Schizothorax is a genus of cyprinid fish found in southern and western China, through northern South Asia (Himalaya) and Central Asia, to Iran. They are primarily found in highland rivers, streams and lakes, although a few species occur in lower-lying locations, like Lake Balkhash and lakes of the Sistan Basin. Their scientific name means "cloven-breast", from Ancient Greek () 'to cleave' and () 'breast-plate' (see also thorax). The western species are typically referred to as marinkas from their Russian name (), while the eastern species are usually called snowtrout. Although they do resemble trouts in habitus this is merely due to convergent evolution and they are by no means closely related apart from both being Teleostei: Cyprinids are in the teleost superorder Ostariophysi, while trouts are in the superorder Protacanthopterygii. Their ancestors must thus have diverged as early as the Triassic, more than 200 million years ago.
Schizothorax is classified within the subfamily Schizothoracinae, the snow barbels, within the family Cyprinidae, the family which includes the carps, barbs and related fishes. This grouping was formerly thought to include the mountain barbels now classified in the subfamily Schizopygopsinae.
Species
These are the currently recognized species in this genus:
- Schizothorax argentatus <small>Kessler, 1874</small> (Balkhash marinka)
- Schizothorax beipanensis <small>J. Yang, X. Y. Chen & J. X. Yang, 2009</small>
- Schizothorax biddulphi <small>Günther, 1876</small>
- Schizothorax chivae <small>Arunkumar & Moyon, 2016</small>
- Schizothorax chongi <small>(P. W. Fang, 1936)</small>
- Schizothorax cryptolepis <small>T. Y. Fu & M. R. Ye, 1984</small>
- Schizothorax curvilabiatus <small>(Wu & W.-H. Tsao, 1992)</small>
- Schizothorax dainellii <small>Vinciguerra, 1916</small>
- Schizothorax davidi <small>(Sauvage, 1880)</small>
- Schizothorax dolichonema <small>Herzenstein, 1889</small>
- Schizothorax dulongensis <small>S. Y. Huang, 1985</small>
- Schizothorax edenianus <small>McClelland, 1842</small>
- Schizothorax elongatus <small>S. Y. Huang, 1985</small>
- Schizothorax esocinus <small>Heckel, 1838</small> (Chirruh snowtrout)
- Schizothorax eurystomus <small>Kessler, 1872</small>
- Schizothorax fedtschenkoi <small>Kessler, 1872</small>
- Schizothorax gongshanensis <small>W.-H. Tsao, 1964</small>
- Schizothorax grahami <small>(Regan, 1904)</small>
- Schizothorax griseus <small>Pellegrin, 1931</small>
- Schizothorax gulinensis <small>R. H. Ding, X. Y. Dai & W. Y. Huang, 2022</small>
- Schizothorax heteri <small>J. Yang, L. P. Zheng, ZX. Y. Chen & J. X. Yang, 2013</small>
- Schizothorax heterochilus <small>M. R. Ye & T. Y. Fu, 1986</small>
- Schizothorax heterophysallidos <small>J. Yang, X. Y. Chen & J. X. Yang, 2009</small>
- Schizothorax huegelii <small>Heckel, 1838</small>
- Schizothorax integrilabiatus <small>(Y. F. Wu et al., 1992)</small>
- Schizothorax intermedius <small>McClelland & Griffith, 1842</small>
- Schizothorax kozlovi <small>Nikolskii, 1903</small>
- Schizothorax kumaonensis <small>Menon, 1971</small> (Kumaon snowtrout)
- Schizothorax labiatus <small>(McClelland, 1842)</small> (Kunar snowtrout)
- Schizothorax labrosus <small>Y. H. Wang, D. D. Zhuang & L. C. Gao, 1981</small>
- Schizothorax lantsangensis <small>W.-H. Tsao, 1964</small>
- Schizothorax lepidothorax <small>J. X. Yang, 1991</small>
- Schizothorax leukus <small>J. Yang, L. P. Zheng, X. Y. Chen & J. X. Yang, 2013</small>
- Schizothorax lissolabiatus <small>W.-H. Tsao, 1964</small>
- Schizothorax longibarbus <small>(P. W. Fang, 1936)</small>
- Schizothorax macrophthalmus <small>Terashima, 1984</small> (Nepalese snowtrout)
- Schizothorax macropogon <small>Regan, 1905</small>
- Schizothorax malacathus <small>S. Y. Huang, 1985</small>
- Schizothorax meridionalis <small>W.-H. Tsao, 1964</small>
- Schizothorax microcephalus <small>F. Day, 1877</small>
- Schizothorax microstomus <small>S. Y. Huang, 1982</small>
- Schizothorax molesworthi <small>(B. L. Chaudhuri, 1913)</small> (Blunt-nosed snowtrout)
- Schizothorax myzostomus <small>W.-H. Tsao, 1964</small>
- Schizothorax nasus <small>Heckel, 1838</small> (Dongu snowtrout)
- Schizothorax nepalensis <small>Terashima, 1984</small>
- Schizothorax niger <small>Heckel, 1838</small> (Alghad snowtrout)
- Schizothorax ninglangensis <small>Y. H. Wang, K. X. Zhang & D. D. Zhuang, 1981</small>
- Schizothorax nudiventris <small>J. Yang, X. Y. Chen & J. X. Yang, 2009</small>
- Schizothorax nukiangensis <small>W.-H. Tsao, 1964</small>
- Schizothorax oconnori <small>Lloyd, 1908</small>
- Schizothorax oligolepis <small>S. Y. Huang, 1985</small>
- Schizothorax parvus <small>W.-H. Tsao, 1964</small>
- Schizothorax pelzami <small>Kessler, 1870</small> (Transcaspian marinka)
- Schizothorax plagiostomus <small>Heckel, 1838</small>
- Schizothorax prenanti <small>(T. L. Tchang, 1930)</small>
- Schizothorax progastus <small>(McClelland, 1839)</small> (Dinnawah snowtrout)
- Schizothorax pseudoaksaiensis <small>Herzenstein, 1889</small> (Ili marinka)
- Schizothorax puncticulatus <small>C. G. Zhang, Y. H. Zhao & C. Y. Niu, 2019</small>
- Schizothorax ramzani <small>(Javed, Ullah & Pervaiz, 2012)</small>
- Schizothorax raraensis <small>Terashima, 1984</small> (Rara snowtrout)
- Schizothorax richardsonii <small>(J. E. Gray, 1832)</small> (Common snowtrout)
- Schizothorax rotundimaxillaris <small>Y. F. Wu & C. Z. Wu, 1992</small>
- â Schizothorax saltans <small>Regan, 1905</small>
- Schizothorax sinensis <small>Herzenstein, 1889</small>
- Schizothorax skarduensis <small>Mirza & A. A. Awan, 1978</small>
- Schizothorax taliensis <small>Regan, 1907</small>
- Schizothorax waltoni <small>Regan, 1905</small>
- Schizothorax wangchiachii <small>(P. W. Fang, 1936)</small>
- Schizothorax yunnanensis <small>Norman, 1923</small>
- Schizothorax zarudnyi <small>(Nikolskii, 1897)</small>
References