Actinopterygii (ray-finned fishes) > Osmeriformes
(Smelts) > Alepocephalidae
Etymology: Leptoderma: Greek, leptos = thin + Greek, derma = skin (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic; depth range 0 - 1700 m (Ref. 559). Deep-water
Western Pacific: Suruga Bay, Japan and western Australia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 21.0 cm SL male/unsexed; (Ref. 559)
Morphology | Morphometrics
(total): 37. Head and body covered with filmy skin. Eye large and circular. Mouth small oblique. Median fin rays separated from procurrent fin rays. Lateral line with dermal papillae. Body color bluish-gray. Reaches 21 cm SL.
Minimum depth from Ref. 58018.
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. 120744)
CITES (Ref. 118484)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 6 - 15, mean 9.7 (based on 82 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00347 (0.00162 - 0.00740), 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
): 3.4 ±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 (37 of 100) .