Opistognathus is a genus of fish in the family Opistognathidae found in the Atlantic, Indian and Pacific Ocean.
Species There are currently 72 recognized species in this genus: Opistognathus adelus Smith-Vaniz, 2010 (Obscure jawfish) Smith-Vaniz, W.F. (2010): New species of Indo-Pacific jawfishes (Opistognathus: Opistognathidae) from the Western Indian Ocean and Red Sea. Smithiana Bulletin, 12: 39-54. Opistognathus afer Smith-Vaniz, 2010 (African jawfish) Opistognathus albicaudatus Smith-Vaniz, 2011 (White-tail jawfish) Smith-Vaniz, W.F. (2011): Opistognathus albicaudatus, a new species of jawfish (Teleostei: Opistognathidae) from the Andaman Islands. Zootaxa, 3085: 34–40. Opistognathus alleni Smith-Vaniz, 2004 (Abrolhos jawfish) Opistognathus annulatus (Eibl-Eibesfeldt & Klausewitz, 1961) Opistognathus aurifrons (D. S. Jordan & J. C. Thompson, 1905) (Yellow-head jawfish) Opistognathus brasiliensis Smith-Vaniz, 1997 (Dark-fin jawfish) Opistognathus brochus W. A. Bussing & Lavenberg, 2003 Opistognathus castelnaui Bleeker, 1860 (Castelnau's jawfish) Opistognathus crassus Smith-Vaniz, 2010 (Stout jawfish)
Opistognathus cryos Su & Ho 2024
Opistognathus cuvierii Valenciennes, 1836 (Bar-tail jawfish) Opistognathus cyanospilotus Smith-Vaniz, 2009 (Blue-blotch jawfish) Opistognathus darwiniensis W. J. Macleay, 1878 (Darwin jawfish) Opistognathus decorus Smith-Vaniz & Yoshino, 1985 Opistognathus dendriticus (D. S. Jordan & R. E. Richardson, 1908) (Dendtric jawfish) Opistognathus dipharus Smith-Vaniz, 2010 (Tail-beacon jawfish) Opistognathus elizabethensis Smith-Vaniz, 2004 (Elizabeth Reef jawfish) Opistognathus ensiferus Smith-Vaniz, 2016 Smith-Vaniz, W.F. (2016): Opistognathus ensiferus, a new species of jawfish (Opistognathidae) from the Gulf of Mannar, India, with redescription of O. solorensis Bleeker. Zootaxa, 4196 (2): 278–288. Opistognathus evermanni (D. S. Jordan & Snyder, 1902) Opistognathus eximius (J. D. Ogilby, 1908) (Harlequin jawfish) Opistognathus fenmutis Acero P & Franke, 1993 Opistognathus fossoris W. A. Bussing & Lavenberg, 2003 Opistognathus galapagensis G. R. Allen & D. R. Robertson, 1991 (Galapagos jawfish) Opistognathus gilberti J. E. Böhlke, 1967 (Yellow jawfish) Opistognathus hongkongiensis W. L. Y. Chan, 1968 Opistognathus hopkinsi (D. S. Jordan & Snyder, 1902) Opistognathus inornatus E. P. Ramsay & J. D. Ogilby, 1887 (Black jawfish) Opistognathus iyonis (D. S. Jordan & W. F. Thompson, 1913) Opistognathus jacksoniensis W. J. Macleay, 1881 (Jawfish) Opistognathus latitabundus (Whitley, 1937) (Blotched jawfish) Opistognathus leprocarus Smith-Vaniz, 1997 (Rough-cheek jawfish) Opistognathus liturus Smith-Vaniz & Yoshino, 1985 Opistognathus lonchurus D. S. Jordan & C. H. Gilbert, 1882 (Moustache jawfish) Opistognathus longinaris Smith-Vaniz, 2010 (Long-nostril jawfish) Opistognathus macrognathus Poey, 1860 (Banded jawfish) Opistognathus macrolepis W. K. H. Peters, 1866 (Big-scale jawfish) Opistognathus margaretae Smith-Vaniz, 1983 (Half-scaled jawfish) Opistognathus maxillosus Poey, 1860 (Mottled jawfish) Opistognathus megalepis Smith-Vaniz, 1972 (Large-scale jawfish) Opistognathus melachasme Smith-Vaniz, 1972 (Yellow-mouth jawfish) Opistognathus mexicanus G. R. Allen & D. R. Robertson, 1991 (Mexican jawfish) Opistognathus muscatensis Boulenger, 1888 (Robust jawfish) Opistognathus nigromarginatus Rüppell, 1830 (Birdled jawfish) Opistognathus nothus Smith-Vaniz, 1997 Opistognathus panamaensis G. R. Allen & D. R. Robertson, 1991 (Panamanian jawfish) Opistognathus papuensis Bleeker, 1868 (Papuan jawfish) Opistognathus pardus Smith-Vaniz, Bineesh & Akhilesh, 2012 (Leopard jawfish) Smith-Vaniz, W.F., Bineesh, K.K. & Akhilesh, K.V. (2012): Opistognathus pardus, a new species of jawfish (Teleostei: Opistognathidae) from the Western Indian Ocean. Zootaxa, 3523: 20–24. Opistognathus punctatus W. K. H. Peters, 1869 (Fine-spotted jawfish) Opistognathus randalli Smith-Vaniz, 2009 (Gold-specs jawfish) Opistognathus reticeps Smith-Vaniz, 2004 Opistognathus reticulatus (McKay, 1969) (Reticulated jawfish) Opistognathus rhomaleus D. S. Jordan & C. H. Gilbert, 1882 (Giant jawfish) Opistognathus robinsi Smith-Vaniz, 1997 (Spot-fin jawfish) Opistognathus rosenbergii Bleeker, 1856 (Rosenberg's jawfish) Opistognathus rosenblatti G. R. Allen & D. R. Robertson, 1991 (Blue-spotted jawfish) Opistognathus rufilineatus Smith-Vaniz & G. R. Allen, 2007 (Red-lined jawfish) Opistognathus scops (O. P. Jenkins & Evermann, 1889) (Bulls-eye jawfish) Opistognathus seminudus Smith-Vaniz, 2004 (Half-naked jawfish) Opistognathus signatus Smith-Vaniz, 1997 Opistognathus simus Smith-Vaniz, 2010 (Cargados jawfish) Opistognathus smithvanizi W. A. Bussing & Lavenberg, 2003 Opistognathus solorensis Bleeker, 1853 (Solor jawfish) Opistognathus stigmosus Smith-Vaniz, 2004 (Coral Sea jawfish) Opistognathus trimaculatus Hiramatsu & Endo, 2013 (Five-banded jawfish) Hiramatsu, W. & Endo, H. (2013): Opistognathus trimaculatus, a New Jawfish (Teleostei: Opistognathidae) from Tosa Bay, Japan. Bulletin of the National Museum of Natural Science, Ser. A., Suppl. No. 7: 19–23. Opistognathus variabilis Smith-Vaniz, 2009 (Variable jawfish) Opistognathus verecundus Smith-Vaniz, 2004 (Bashful jawfish) Opistognathus walkeri W. A. Bussing & Lavenberg, 2003 Opistognathus whitehursti (Longley, 1927) (Dusky jawfish) Opistognathus ctenion Fujiwara, Motomura & Shinohara, 2023 Opistognathus schrieri Smith-Vaniz, 2017 Opistognathus thionyi Smith-Vaniz, Tornabene & Macieira, 2018 Opistognathus vicinus Smith-Vaniz, Tornabene & Macieira, 2018 Opistognathus ocellicaudatus Shinohara, 2021 Opistognathus wharekuriensis Schwarzhans, 2019
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