HomeFish encyclopediaRay-finned fishesEels and MoraysMoray eelsUnicolor moray Unicolor moray (Echidna unicolor) Scientific name: Echidna unicolor Schultz, 1953 The Unicolor moray (Echidna unicolor) is a marine fish of the family Muraenidae. Native range: Indo-Pacific, East Africa to the Line, Marquesan, and Society islands, north to the Marshall and Johnston islands. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 0; Anal spines: 0; Anal soft rays: 0. Uniformly tan to light brown with a dark ring around each eye.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEchidna unicolorFamilyMuraenidae (Moray eels)OrderAnguilliformes (Eels and Morays)ClassActinopterygii (Ray-finned fishes)Maximum length40.0Depth range5–25 m (16–82 ft)EnvironmentMarine; reef-associated; depth range 5 - 25 mClimateTropicalDistributionIndo-Pacific: East Africa to the Line, Marquesan, and Society islands, north to the Marshall and Johnston islands.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