Ostichthys is a genus of fish in the family Holocentridae found in Atlantic, Indian and Pacific Ocean.

Species Fifteen species in this genus are recognized: Ostichthys acanthorhinus J. E. Randall, Shimizu & Yamakawa, 1982 (spiny-snout soldierfish) Ostichthys archiepiscopus (Valenciennes, 1862) (straight-head soldierfish) Ostichthys brachygnathus J. E. Randall & R. F. Myers, 1993 (short-jaw soldierfish) Ostichthys convexus D. W. Greenfield, J. E. Randall & Psomadakis, 2017 (round-head soldierfish) Greenfield, D.W., Randall, J.E. & Psomadakis, P.N. (2017): A review of the soldierfish genus Ostichthys (Beryciformes: Holocentridae), with descriptions of two new species from Myanmar. Journal of the Ocean Science Foundation, 26: 1–33. Ostichthys daniela D. W. Greenfield, J. E. Randall & Psomadakis, 2017 (Daniela's soldierfish) Ostichthys delta J. E. Randall, Shimizu & Yamakawa, 1982 (red-coat soldierfish) Ostichthys hypsipterygion J. E. Randall, Shimizu & Yamakawa, 1982 (high-fin soldierfish) Ostichthys hypsufensis Golani, 1984 (Red Sea soldierfish) Ostichthys japonicus (G. Cuvier, 1829) (Japanese soldierfish) Ostichthys kaianus (Günther, 1880) (deep-water soldierfish) Ostichthys kinchi R. Fricke, 2017 (New Ireland soldierfish) Fricke, R. (2017): Ostichthys kinchi, a new species of soldierfish from New Ireland, Papua New Guinea, western Pacific Ocean (Teleostei: Holocentridae). FishTaxa, 2 (2): 62-70. Ostichthys ovaloculus J. E. Randall & Wrobel, 1988 (oval-eye soldierfish) Ostichthys sandix J. E. Randall, Shimizu & Yamakawa, 1982 (vermilion soldierfish) Ostichthys sheni J. P. Chen, K. T. Shao & H. K. Mok, 1990 (Shen's soldierfish) Ostichthys spiniger Fricke, 2017 (western pacific spinysnout soldierfish) Ostichthys trachypoma (Günther, 1859) (big-eye soldierfish)

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