HomeFish encyclopediaRay-finned fishesEels and MoraysMoray eelsBrown moray Brown moray (Gymnothorax unicolor) Scientific name: Gymnothorax unicolor Delaroche, 1809 The Brown moray (Gymnothorax unicolor) is a marine fish of the family Muraenidae. Native range: Eastern Atlantic, southern Portugal to Cape Verde, including the Azores, Madeira and Canary Islands. Also throughout the Mediterranean. BiologyFound on shelf, on rocky coasts, rough sand, gravel, crevices, small caves and shadowed zones. Feeds on small crabs and gastropods.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameGymnothorax unicolorFamilyMuraenidae (Moray eels)OrderAnguilliformes (Eels and Morays)ClassActinopterygii (Ray-finned fishes)Maximum length100.0Depth range0–20 m (0–66 ft)EnvironmentMarine; demersal; depth range 0 - 20 mClimateSubtropicalDistributionEastern Atlantic: southern Portugal to Cape Verde, including the Azores, Madeira and Canary Islands. Also throughout the Mediterranean.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: minor commercial; gamefish: yes SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026