Actinopteri (ray-finned fishes) > Anguilliformes
(Eels and morays) > Congridae
(Conger and garden eels) > Congrinae
Etymology: Bathycongrus: Greek, bathys = deep + Latin, conger = conger (Ref. 45335); retrotinctus: Named for John Randall. More on authors: Jordan & Snyder.
Environment: milieu / climate zone / depth range / distribution range
Marine; bathydemersal; depth range 150 - 450 m (Ref. 7446), usually - m (Ref. ). Deep-water; 0°C -
Western Pacific: Japan to the Philippines.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 54.0 cm TL male/unsexed; (Ref. 7446)
Morphology | Morphometrics
Body 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 (Ref. 37528). Dorsal-fin origin slightly behind anteriormost insertion of pectoral fin to above middle of appressed fin. Preanal lateral line pores 29-32 (Ref. 36324).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Castle, P.H.J. and D.G. Smith, 1999. A reassessment of the eels of the genus Bathycongrus in the Indo-west Pacific. J. Fish Biol. 54(5):973-995. (Ref. 36324)
IUCN Red List Status (Ref. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 1.8 - 18.5, mean 13.6 °C (based on 98 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00062 (0.00028 - 0.00136), b=3.19 (3.00 - 3.38), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.9 ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate vulnerability (40 of 100) .