HomeFish encyclopediaRay-finned fishesPerch-like fishJawfishesMottled jawfish Mottled jawfish (Opistognathus maxillosus) Scientific name: Opistognathus maxillosus Poey, 1860 The Mottled jawfish (Opistognathus maxillosus) is a marine fish of the family Opistognathidae. Native range: Western Atlantic, southern Florida, USA and Bahamas to Central America, West Indies and Caribbean Islands. BiologyDorsal spines (total): 11; Dorsal soft rays (total): 15; Anal spines: 3; Anal soft rays: 15. Black spot in the dorsal fin is in the lower half of the fin and is usually located between the 6th and 9th spines; there is some brown pigment at the corner of the mouth but no black and white bands inside the maxilla.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameOpistognathus maxillosusFamilyOpistognathidae (Jawfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length13.0EnvironmentMarine; reef-associatedClimateTropicalDistributionWestern Atlantic: southern Florida, USA and Bahamas to Central America, West Indies and Caribbean Islands.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesAquarium: commercial SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026