HomeFish encyclopediaRay-finned fishesEels and MoraysMoray eelsDark moray Dark moray (Gymnothorax afer) Scientific name: Gymnothorax afer Bloch, 1795 The Dark moray (Gymnothorax afer) is a brackish-water fish of the family Muraenidae. Native range: Eastern Atlantic, Mauritania to Cape Frio, Namibia. Species factsScientific nameGymnothorax aferFamilyMuraenidae (Moray eels)OrderAnguilliformes (Eels and Morays)ClassActinopterygii (Ray-finned fishes)Maximum length100.0Common length60.0Depth range10–45 m (33–148 ft)EnvironmentMarine; brackish; demersal; amphidromous; depth range 10 - 45 mClimateTropicalDistributionEastern Atlantic: Mauritania to Cape Frio, Namibia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: minor commercial SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026