Actinopteri (ray-finned fishes) > Alepocephaliformes
(Slickheads and tubeshoulders.) > Alepocephalidae
Etymology: Xenodermichthys: Greek, xenos = strange + Greek, derma = skin + Greek, ichthys = fish (Ref. 45335). More on author: Günther.
Environment: milieu / climate zone / depth range / distribution range
Marine; benthopelagic; depth range - m (Ref. ), usually - m (Ref. ). Tropical; 0°C -
Western Pacific: Japan and the Philippines.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 20.0 cm SL male/unsexed; (Ref. 559)
soft rays: 32 - 33. Head and body covered with filmy skin. Scales absent form the body. Head small; eyes large and circular. Dorsal fin opposite to anal fin. Bases of median fins long. Photopores very small projecting from skin with the peduncle. Body color brown.
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. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 4.1 - 10.3, mean 6 °C (based on 386 cells).
Phylogenetic diversity index (Ref. 82805
= 0.7500 [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
): 3.4 ±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 (35 of 100) .