HomeFish encyclopediaRay-finned fishesPerch-like fishJawfishesBlack jawfish Black jawfish (Opistognathus inornatus) Scientific name: Opistognathus inornatus Ramsay & Ogilby, 1887 The Black jawfish (Opistognathus inornatus) is a marine fish of the family Opistognathidae. Native range: Eastern Indian Ocean, northern Australia, from Exmouth Gulf to the Gulf of Carpentaria. BiologyFound in coastal waters, on rubble or soft bottoms.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameOpistognathus inornatusFamilyOpistognathidae (Jawfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length55.0EnvironmentMarine; demersalClimateTropicalDistributionEastern Indian Ocean: northern Australia, from Exmouth Gulf to the Gulf of Carpentaria.Conservation status (IUCN)Not EvaluatedThreat to humansHarmless SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026