Actinopteri (ray-finned fishes) > Alepocephaliformes
(Slickheads and tubeshoulders.) > Alepocephalidae
Etymology: Rinoctes: Derived from Greek, rhinos = nose .
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic; depth range 2000 - 4156 m (Ref. 4460), usually 3650 - m (Ref. ). Deep-water; 0°C - ; 55°N - 18°N, 93°W - 12°W (Ref. 57327)
Eastern Atlantic: south-west of Ireland, Azores Island, scattered records off Morocco and off Mauritania. Western Atlantic: Gulf of Mexico (Ref. 4736). Probably occurring in the Western Central Pacific (Ref. 38717). Reported from the Indian Ocean (Ref. 43180).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 19.0 cm SL male/unsexed; (Ref. 4460)
Abyssal, mostly found below 3,650 m; locally frequent, somewhat gregarious. Feeds on engybenthic crustaceans, worms and sponges.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Markle, D.F. and J.-C. Quéro, 1984. Alepocephalidae (including Bathylaconidae, Bathyprionidae). p. 228-253. In P.J.P. Whitehead, M.-L. Bauchot, J.-C. Hureau, J. Nielsen and E. Tortonese (eds.) Fishes of the North-eastern Atlantic and the Mediterranean. UNESCO, Paris. Vol. 1. (Ref. 4736)
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
): 2.3 - 4.2, mean 2.5 °C (based on 553 cells).
Phylogenetic diversity index (Ref. 82805
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.2 ±0.31 se; based on food items.
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Assuming tmax>3).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (35 of 100) .