Symphurus

Symphurus là một chi cá trong họ cá lưỡi trâu Cynoglossidae thuộc bộ cá thân bẹt được tìm thấy ở vùng biển Đại Tây Dương, Ấn Độ Dương và Thái Bình DươngTyler, J. (2005): Distribution, population characteristics and trophic ecology of a sulphophilic hydrothermal vent tonguefish (Pleuronectiformes: Cynoglossidae). Master of Science. Thesis. University of Victoria: Canada.Munroe, T.A. & Hashimoto, J. (2008): A new Western Pacific Tonguefish (Pleuronectiformes: Cynoglossidae): The first Pleuronectiform discovered at active Hydrothermal Vents. Zootaxa, 1839: 43–59.

Các loài
Hiện hành có 78 loài được ghi nhận trong chi này:
 Symphurus arawak C. R. Robins & J. E. Randall, 1965 (Caribbean tonguefish)
 Symphurus atramentatus D. S. Jordan & Bollman, 1890 (Ink-spot tonguefish)
 Symphurus atricaudus (D. S. Jordan & C. H. Gilbert, 1880) (California tonguefish)
 Symphurus australis McCulloch, 1907
 Symphurus bathyspilus Krabbenhoft & Munroe, 2003
 Symphurus billykrietei Munroe, 1998 (Kriete's tonguefish)
 Symphurus callopterus Munroe & Mahadeva, 1989 (Chocolate tonguefish)
 Symphurus caribbeanus Munroe, 1991
 Symphurus chabanaudi Mahadeva & Munroe, 1990 (Chabanaud's tonguefish)
 Symphurus civitatium Ginsburg, 1951 (Offshore tonguefish)
 Symphurus diabolicus Mahadeva & Munroe, 1990 (Devil's tonguefish)
 Symphurus diomedeanus (Goode & T. H. Bean, 1885) (Spotted-fin tonguefish)
 Symphurus elongatus (Günther, 1868) (Elongated tonguefish)
 Symphurus fasciolaris C. H. Gilbert, 1892 (Banded tonguefish)
 Symphurus fuscus A. B. Brauer, 1906
 Symphurus gilesii (Alcock, 1889)
 Symphurus ginsburgi Menezes & Benvegnú, 1976 (Ginsburg's tonguefish)
 Symphurus gorgonae Chabanaud, 1948 (Gorgonian tonguefish)
 Symphurus holothuriae Chabanaud, 1948 
 Symphurus hondoensis C. L. Hubbs, 1915 
 Symphurus insularis Munroe, Brito & C. Hernández, 2000
 Symphurus jenynsi Evermann & Kendall, 1906 (Jenyn's tonguefish)
 Symphurus kyaropterygium Menezes & Benvegnú, 1976
 Symphurus leei D. S. Jordan & Bollman, 1890 (Lee's tonguefish)
 Symphurus leucochilus M. Y. Lee, Munroe & K. T. Shao, 2014 Lee, M.-Y., Munroe, T.A. & Shao, K.-T. (2014): Description of a new cryptic, shallow-water tonguefish (Pleuronectiformes: Cynoglossidae: Symphurus) from the western North Pacific Ocean. Journal of Fish Biology, 85 (3): 563–585.
 Symphurus ligulatus (Cocco, 1844) 
 Symphurus longirostris M. Y. Lee, Munroe & Y. Kai, 2016 (Long-snout tonguefish) Lee, M.-Y., Munroe, T.A. & Kai, Y. (2016): Description of a new cryptic species of tonguefish (Pleuronectiformes: Cynoglossidae: Symphurus) from shallow waters off Japan. Ichthyological Research, First online: ngày 11 tháng 7 năm 2016.
 Symphurus lubbocki Munroe, 1990
 Symphurus luzonensis Chabanaud, 1955
 Symphurus macrophthalmus Norman, 1939
 Symphurus maculopinnis Munroe, J. Tyler & Tunnicliffe, 2011 Munroe, T.A., Tyler, J. & Tunnicliffe, V. (2011): Description and biological observations on a new species of deepwater symphurine tonguefish (Pleuronectiformes: Cynoglossidae: Symphurus) collected at Volcano–19, Tonga Arc, West Pacific Ocean. Zootaxa, 3061: 53-66.
 Symphurus maldivensis Chabanaud, 1955
 Symphurus marginatus (Goode & T. H. Bean, 1886) (Margined tonguefish)
 Symphurus marmoratus Fowler, 1934
 Symphurus megasomus M. Y. Lee, H. M. Chen & K. T. Shao, 2009 (Giant tonguefish)
 Symphurus melanurus H. W. Clark, 1936 (Drab tonguefish)
 Symphurus melasmatotheca Munroe & Nizinski, 1990 (Black-stripe tonguefish)
 Symphurus microlepis Garman, 1899 (Small-fin tonguefish)
 Symphurus microrhynchus (M. C. W. Weber, 1913)
 Symphurus minor Ginsburg, 1951 (Large-scale tonguefish)
 Symphurus monostigmus Munroe, 2006
 Symphurus multimaculatus M. Y. Lee, Munroe & H. M. Chen, 2009 (Pepper-dot tonguefish)
 Symphurus nebulosus (Goode & T. H. Bean, 1883) (Freckled tonguefish)
 Symphurus nigrescens Rafinesque, 1810 (Tonguefish)
 Symphurus normani Chabanaud, 1950 (Norman's tonguefish)
 Symphurus novemfasciatus S. C. Shen & W. W. Lin, 1984
 Symphurus ocellaris Munroe & D. R. Robertson, 2005 (Ring-tail tonguefish)
 Symphurus ocellatus von Bonde, 1922 (Double-spot tonguefish)
 Symphurus oculellus Munroe, 1991
 Symphurus oligomerus Mahadeva & Munroe, 1990 (Spot-fin tonguefish)
 Symphurus ommaspilus J. E. Böhlke, 1961 (Ocellated tonguefish)
 Symphurus orientalis (Bleeker, 1879)
 Symphurus parvus Ginsburg, 1951 (Pygmy tonguefish)
 Symphurus pelicanus Ginsburg, 1951 (Long-tail tonguefish)
 Symphurus piger (Goode & T. H. Bean, 1886) (Deep-water tonguefish)
 Symphurus plagiusa (Linnaeus, 1766) (Black-cheek tonguefish)
 Symphurus plagusia (Bloch & J. G. Schneider, 1801) (Dusky-cheek tonguefish)
 Symphurus prolatinaris Munroe, Nizinski & Mahadeva, 1991 (Half-striped tonguefish)
 Symphurus pusillus (Goode & T. H. Bean, 1885) (Northern tonguefish)
 Symphurus regani M. C. W. Weber & de Beaufort, 1929
 Symphurus reticulatus Munroe, 1990
 Symphurus rhytisma J. E. Böhlke, 1961 (Patch-tail tonguefish)
 Symphurus schultzi Chabanaud, 1955
 Symphurus septemstriatus (Alcock, 1891) (Seven-band tonguefish)
 Symphurus stigmosus Munroe, 1998 (Blotch-fin tonguefish)
 Symphurus strictus C. H. Gilbert, 1905 (Black-belly tonguefish)
 Symphurus tessellatus (Quoy & Gaimard, 1824)
 Symphurus thermophilus Munroe & Hashimoto, 2008 (Western Pacific tonguefish)
 Symphurus trewavasae Chabanaud, 1948 (Trewavas' tonguefish)
 Symphurus trifasciatus (Alcock, 1894) (Three-band tonguefish)
 Symphurus undatus C. H. Gilbert, 1905
 Symphurus undecimplerus Munroe & Nizinski, 1990 (Dark-cheek tonguefish)
 Symphurus urospilus Ginsburg, 1951 (Spot-tail tonguefish)
 Symphurus vanmelleae Chabanaud, 1952 (Vanmelle’s tonguefish)
 Symphurus variegatus (Gilchrist, 1903)
 Symphurus varius Garman, 1899 (Mottled tonguefish)
 Symphurus williamsi D. S. Jordan & Culver, 1895 (William's tonguefish)
 Symphurus woodmasoni (Alcock, 1889)

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