Actinopteri (ray-finned fishes) > Alepocephaliformes
(Slickheads and tubeshoulders.) > Alepocephalidae
Etymology: Alepocephalus: Greek, alepos, alepidotos = without scales + Greek, kephale = head (Ref. 45335). More on authors: Jordan & Thompson.
Environment: milieu / climate zone / depth range / distribution range
Marine; bathydemersal; depth range 500 - 2000 m (Ref. 41299). Deep-water
Northwest Pacific: Hokkaido, Japan to the East China Sea.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 63.0 cm SL male/unsexed; (Ref. 559)
soft rays: 17 - 18. Body nearly cylindrical anteriorly, but compressed posteriorly. Head large, more than one-third of SL in length. Maxillary extending to middle of eye. Scales small, more than 65 in lateral line. Jet black head entirely naked.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Masuda, H., K. Amaoka, C. Araga, T. Uyeno and T. Yoshino, 1984. The fishes of the Japanese Archipelago. Vol. 1. Tokai University Press, Tokyo, Japan. 437 p. (text). (Ref. 559)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 3.6 - 5.1, mean 4.4 °C (based on 43 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00347 (0.00164 - 0.00733), 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
): 3.7 ±0.2 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Very Low, minimum population doubling time more than 14 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): High to very high vulnerability (66 of 100) .