HomeFish encyclopediaRay-finned fishesEels and MoraysMoray eelsFreckleface reef-eel Freckleface reef-eel (Uropterygius xanthopterus) Scientific name: Uropterygius xanthopterus Bleeker, 1859 The Freckleface reef-eel (Uropterygius xanthopterus) is a marine fish of the family Muraenidae. Native range: Indo-Pacific, East Africa to the Line, Marquesan, and Society islands, north to the Mariana and Marshall islands. BiologyMottled brown with prominent white specks especially on the head.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameUropterygius xanthopterusFamilyMuraenidae (Moray eels)OrderAnguilliformes (Eels and Morays)ClassActinopterygii (Ray-finned fishes)Maximum length62.0Depth range5–56 m (16–184 ft)EnvironmentMarine; reef-associated; depth range 5 - 56 mClimateTropicalDistributionIndo-Pacific: East Africa to the Line, Marquesan, and Society islands, north to the Mariana and Marshall 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