HomeFish encyclopediaRay-finned fishesEels and MoraysMoray eelsDrab moray Drab moray (Gymnothorax monochrous) Scientific name: Gymnothorax monochrous Bleeker, 1856 The Drab moray (Gymnothorax monochrous) is a marine fish of the family Muraenidae. Native range: Indo-Pacific, East Africa to the Marshall Islands, north to the Ryukyu Islands; Marshall Islands in Micronesia. Likely to occur in Seychelles. BiologyInhabits relatively turbid areas of sheltered lagoon reefs.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameGymnothorax monochrousFamilyMuraenidae (Moray eels)OrderAnguilliformes (Eels and Morays)ClassActinopterygii (Ray-finned fishes)Maximum length80.0EnvironmentMarine; reef-associatedClimateTropicalDistributionIndo-Pacific: East Africa to the Marshall Islands, north to the Ryukyu Islands; Marshall Islands in Micronesia. Likely to occur in Seychelles.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