HomeMarine aquarium fishEels, lionfish & predatorsGiant moray Giant moray (Gymnothorax javanicus) Scientific name: Gymnothorax javanicus Bleeker, 1859 The Giant moray (Gymnothorax javanicus) is a marine fish of the family Muraenidae. BiologyDorsal spines (total): 0; Anal spines: 0. Juveniles are tan with numerous large black spots. Adults have black specks that grade into leopard-like spots behind the head and a black area surrounding the gill opening.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameGymnothorax javanicusFamilyMuraenidae (Moray eels)OrderAnguilliformes (Eels and Morays)ClassActinopterygii (Ray-finned fishes)Maximum length300Depth range0–50 m (0–164 ft)EnvironmentMarine; reef-associated; depth range 0 - 50 mClimateTropicalDistributionIndo-Pacific: Red Sea and East Africa to the Marquesas and Oeno Atoll (Pitcairn Group), north to the Ryukyu and Hawaiian islands, south to New Caledonia and the Austral Islands.Conservation status (IUCN)Not EvaluatedThreat to humansReports of ciguatera poisoningUsesFisheries: subsistence fisheries; aquarium: public aquariums More eels, lionfish & predatorsRed lionfishPterois volitansAbbott's moray eelGymnothorax eurostusTiger reef-eelScuticaria tigrinaLeopard moray eelEnchelycore pardalisSteindachner's moray eelGymnothorax steindachneriStarry morayGymnothorax nudivomerSee all eels, lionfish & predators SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026