HomeFish encyclopediaRay-finned fishesEels and MoraysMoray eelsBlack snake moray Black snake moray (Uropterygius xenodontus) Scientific name: Uropterygius xenodontus McCosker & Smith, 1997 The Black snake moray (Uropterygius xenodontus) is a marine fish of the family Muraenidae. Native range: Pacific Ocean, Coral Sea, American Samoa, the Marshall Islands, and Johnston Islands. BiologyVertebrae: 154 - 157. Body uniformly gray-brown; laterally compressed, subrectangular in cross-section. Vertical fins restricted to the tail tip; anus at mid-body; one branchial pore.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameUropterygius xenodontusFamilyMuraenidae (Moray eels)OrderAnguilliformes (Eels and Morays)ClassActinopterygii (Ray-finned fishes)Maximum length53.0Depth range6–9 m (20–30 ft)EnvironmentMarine; reef-associated; depth range 6 - 9 mClimateTropicalDistributionPacific Ocean: Coral Sea, American Samoa, the Marshall Islands, and Johnston Islands.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026