HomeFish encyclopediaRay-finned fishesEels and MoraysMoray eelsBlotch-necked moray Blotch-necked moray (Gymnothorax margaritophorus) Scientific name: Gymnothorax margaritophorus Bleeker, 1864 The Blotch-necked moray (Gymnothorax margaritophorus) is a marine fish of the family Muraenidae. Native range: Indo-Pacific, East Africa to the Line and Society islands, north to the Ryukyu Islands, south to the southern Great Barrier Reef. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 0; Anal spines: 0; Anal soft rays: 0. Color yellowish, mottled and irregularly barred with brown shading to whitish ventrally on head and abdomen. Vertebrae 126-133.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameGymnothorax margaritophorusFamilyMuraenidae (Moray eels)OrderAnguilliformes (Eels and Morays)ClassActinopterygii (Ray-finned fishes)Maximum length70.0Depth range8–25 m (26–82 ft)EnvironmentMarine; reef-associated; depth range 8 - 25 mClimateTropicalDistributionIndo-Pacific: East Africa to the Line and Society islands, north to the Ryukyu Islands, south to the southern Great Barrier Reef.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interest SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026