HomeFish encyclopediaRay-finned fishesEels and MoraysConger and garden eelsSilver Eel Silver Eel (Ariosoma mellissii) Scientific name: Ariosoma mellissii G?nther, 1870 The Silver Eel (Ariosoma mellissii) is a marine fish of the family Congridae. Native range: Southeast Atlantic, known only from St. Helena. BiologyThis rare eel is known only from St. Helena.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAriosoma mellissiiFamilyCongridae (Conger and garden eels)OrderAnguilliformes (Eels and Morays)ClassActinopterygii (Ray-finned fishes)Maximum length42.8Depth range67 m (220 ft)EnvironmentMarine; demersal; depth range ? - 67 mClimateTropicalDistributionSoutheast Atlantic: known only from St. Helena.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (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