HomeFish encyclopediaSharks and RaysElectric raysNumbfishesGiant electric ray Giant electric ray (Narcine entemedor) Scientific name: Narcine entemedor Jordan & Starks, 1895 The Giant electric ray (Narcine entemedor) is a marine fish of the family Narcinidae. Native range: Eastern Pacific, Gulf of California to Peru. BiologyFound in shallow water on sandy bottoms, sometimes adjacent to reefs. Found buried in the sand during the day. Moves into shallow bays at night to feed; prefers polychaete worms, but may take sea squirts.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameNarcine entemedorFamilyNarcinidae (Numbfishes)OrderTorpediniformes (Electric rays)ClassElasmobranchii (Sharks and Rays)Maximum length76.2EnvironmentMarine; demersalClimateTropicalDistributionEastern Pacific: Gulf of California to Peru.Conservation status (IUCN)Data deficient (DD)Threat to humansOtherResilienceLow, minimum population doubling time 4.5 - 14 years (Assuming fecundity SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026