HomeFish encyclopediaRay-finned fishesEels and MoraysConger and garden eelsBlackedge conger Blackedge conger (Bathycongrus retrotinctus) Scientific name: Bathycongrus retrotinctus Jordan & Snyder, 1901 The Blackedge conger (Bathycongrus retrotinctus) is a marine fish of the family Congridae. Native range: Western Pacific, Japan to the Philippines. BiologyBody moderately elongate. Tail slender, attenuate at tip. Snout bluntly pointed, protruding beyond tip of lower jaw. Preserve specimen, head and body pale brown dorsally, much paler on belly. Caudal fin black, pectoral fin pale. Dorsal-fin origin slightly behind anteriormost insertion of pectoral fin to above middle of appressed fin. Preanal lateral line pores 29-32.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameBathycongrus retrotinctusFamilyCongridae (Conger and garden eels)OrderAnguilliformes (Eels and Morays)ClassActinopterygii (Ray-finned fishes)Maximum length54.0Depth range150–450 m (492–1476 ft)EnvironmentMarine; bathydemersal; depth range 150 - 450 mClimateDeep-waterDistributionWestern Pacific: Japan to the Philippines.Conservation status (IUCN)Data deficient (DD)Threat 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