HomeMarine aquarium fishGobies, blennies & dottybacksMoustache jawfish Moustache jawfish (Opistognathus lonchurus) Scientific name: Opistognathus lonchurus Jordan & Gilbert, 1882 The Moustache jawfish (Opistognathus lonchurus) is a marine fish of the family Opistognathidae. Native range: Western Atlantic, southeastern Florida, USA and northeastern Gulf of Mexico to Suriname. Species factsScientific nameOpistognathus lonchurusFamilyOpistognathidae (Jawfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length10.0EnvironmentMarine; reef-associatedClimateTropicalDistributionWestern Atlantic: southeastern Florida, USA and northeastern Gulf of Mexico to Suriname.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesAquarium: commercial More gobies, blennies & dottybacksYellowhead jawfishOpistognathus aurifronsFire gobyNemateleotris magnificaYellow prawn-gobyCryptocentrus cinctusPersian blennyEcsenius midasBanded jawfishOpistognathus macrognathusDusky jawfishOpistognathus whitehurstiSee all gobies, blennies & dottybacks SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026