HomeFish encyclopediaRay-finned fishesEels and MoraysLongneck eelsDuckbill oceanic eel Duckbill oceanic eel (Nessorhamphus ingolfianus) Scientific name: Nessorhamphus ingolfianus Schmidt, 1912 The Duckbill oceanic eel (Nessorhamphus ingolfianus) is a marine fish of the family Derichthyidae. BiologyDorsal spines (total): 0; Anal spines: 0. Dark brown in color. Snout long, depressed, and spatulate in form; lateral line distinct; pectoral fin long, subequal to snout; dorsal and anal fin rays abruptly become shorter near tip of tail and once again become longer, so it appears an independent caudal fin is present.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameNessorhamphus ingolfianusFamilyDerichthyidae (Longneck eels)OrderAnguilliformes (Eels and Morays)ClassActinopterygii (Ray-finned fishes)Maximum length59.8Depth range0–1800 m (0–5906 ft)EnvironmentMarine; bathypelagic; depth range 0 - 1800 mClimateDeep-waterDistributionEastern Atlantic: France to Morocco; off the Cape, South Africa. Also known from temperate and subtropical latitudes of the western Atlantic, southwestern Indian, and southwest Pacific.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceLow, minimum population doubling time 4.5 - 14 years (Assuming tmax>10) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026