HomeFish encyclopediaRay-finned fishesEels and MoraysDuckbill eelsSolitary duckbill eel Solitary duckbill eel (Nettastoma solitarium) Scientific name: Nettastoma solitarium Castle & Smith, 1981 The Solitary duckbill eel (Nettastoma solitarium) is a marine fish of the family Nettastomatidae. Native range: Indo-West Pacific, Kyushu-Palau Ridge, the Philippines, Australia, and the western Indian Ocean. Reported from the Hawaiian Islands. BiologySix supraorbital pores, SO5 present. Lateral line pores 42-45. Median vomerine teeth somewhat enlarged. Posterior nostril above anterodorsal corner of eye.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameNettastoma solitariumFamilyNettastomatidae (Duckbill eels)OrderAnguilliformes (Eels and Morays)ClassActinopterygii (Ray-finned fishes)Maximum length46.5Depth range415–610 m (1362–2001 ft)EnvironmentMarine; benthopelagic; depth range 415 - 610 mClimateDeep-waterDistributionIndo-West Pacific: Kyushu-Palau Ridge, the Philippines, Australia, and the western Indian Ocean. Reported from the Hawaiian Islands.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