HomeFish encyclopediaRay-finned fishesEels and MoraysMoray eelsBlackcheek moray Blackcheek moray (Gymnothorax breedeni) Scientific name: Gymnothorax breedeni McCosker & Randall, 1977 The Blackcheek moray (Gymnothorax breedeni) is a marine fish of the family Muraenidae. Native range: Indo-Pacific, widespread in the Indian Ocean, ranging to some oceanic locations in the Pacific. BiologyVertebrae: 128 - 129. Distinctive black patch mark below eye. Body brown, speckled darker; dark anus and gill opening.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameGymnothorax breedeniFamilyMuraenidae (Moray eels)OrderAnguilliformes (Eels and Morays)ClassActinopterygii (Ray-finned fishes)Maximum length100.0Depth range4–40 m (13–131 ft)EnvironmentMarine; reef-associated; depth range 4 - 40 m, usually ? - 20 mClimateTropicalDistributionIndo-Pacific: widespread in the Indian Ocean, ranging to some oceanic locations in the Pacific.Conservation status (IUCN)Not EvaluatedThreat to humansTraumatogenic SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026