HomeFish encyclopediaRay-finned fishesEels and MoraysConger and garden eelsEared conger Eared conger (Castleichthys auritus) Scientific name: Castleichthys auritus Smith, 2004 The Eared conger (Castleichthys auritus) is a marine fish of the family Congridae. Native range: Eastern Indian Ocean, Western Australia. BiologyVertebrae: 128. This species is distinguished by having the following characters: moderately elongate body; preanal length less than 40% TL; tip of tail slender and flexible, but not greatly attenuate or filiform; well developed pectoral fin; origin of dorsal slightly behind tip of appressed pectoral fin; segmented dorsal and anal-fin rays; equal jaws, rictus below middle of eye; flange present on upper lip; no papillae or plicae on skin of head; relatively large eyes; posterior nostril at mid-eye level; small teeth, not caniniform nor molariform; uniserial maxillary teeth, mandibular teeth uniserial for most of length.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCastleichthys auritusFamilyCongridae (Conger and garden eels)OrderAnguilliformes (Eels and Morays)ClassActinopterygii (Ray-finned fishes)Maximum length28.8Depth range396 m (1299 ft)EnvironmentMarine; benthopelagic; depth range ? - 396 mClimateTropicalDistributionEastern Indian Ocean: Western Australia.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