HomeFish encyclopediaRay-finned fishesPerch-like fishJawfishesHalfscaled jawfish Halfscaled jawfish (Opistognathus margaretae) Scientific name: Opistognathus margaretae Smith-Vaniz, 1983 The Halfscaled jawfish (Opistognathus margaretae) is a marine fish of the family Opistognathidae. Native range: Western Indian Ocean, Shimoni, Kenya to Natal, South Africa. BiologyDorsal spines (total): 11; Dorsal soft rays (total): 13-14; Anal spines: 3; Anal soft rays: 13 - 14. Black spot between the 3rd and 5th spines.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameOpistognathus margaretaeFamilyOpistognathidae (Jawfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length9.2Depth range18–19 m (59–62 ft)EnvironmentMarine; demersal; depth range 18 - 19 mClimateTropicalDistributionWestern Indian Ocean: Shimoni, Kenya to Natal, South Africa.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