HomeFish encyclopediaRay-finned fishesEels and MoraysDuckbill eelsBridge duckbill eel Bridge duckbill eel (Nettenchelys gephyra) Scientific name: Nettenchelys gephyra Castle & Smith, 1981 The Bridge duckbill eel (Nettenchelys gephyra) is a marine fish of the family Nettastomatidae. Native range: Western Pacific, off New Caledonia and the Philippines. A new record from Indonesia. BiologyVertebrae: 158. Anterior median vomerine teeth enlarged. Posterior nostril on top of head about midway between posterior margin of eye and occiput. Mature at 43 cm TL. Other characteristics: Lateral line pores 44.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameNettenchelys gephyraFamilyNettastomatidae (Duckbill eels)OrderAnguilliformes (Eels and Morays)ClassActinopterygii (Ray-finned fishes)Maximum length43.1Depth range400–412 m (1312–1352 ft)EnvironmentMarine; benthopelagic; depth range 400 - 412 mClimateDeep-waterDistributionWestern Pacific: off New Caledonia and the Philippines. A new record from Indonesia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026