HomeFish encyclopediaRay-finned fishesEels and MoraysConger and garden eelsGiant leptocephalus Giant leptocephalus (Coloconger giganteus) Scientific name: Coloconger giganteus Castle, 1959 The Giant leptocephalus (Coloconger giganteus) is a marine fish of the family Congridae. Native range: Deep-water. BiologyEastern Pacific: central California to Peru. Southwest Pacific: Chathams Island, New Zealand. Occurs worldwide. Countries | FAO areas | Ecosystems | Occurrences | IntroductionsSource: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameColoconger giganteusFamilyCongridae (Conger and garden eels)OrderAnguilliformes (Eels and Morays)ClassActinopterygii (Ray-finned fishes)EnvironmentMarine; bathydemersalClimateDeep-waterDistributionDeep-waterConservation 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