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Alepocephaliformes (Slickheads and tubeshoulders) >
Alepocephalidae (Slickheads)
Etymology: Alepocephalus: Greek, alepos, alepidotos = without scales + Greek, kephale = head (Ref. 45335).
Eponymy: Alexander Emanuel Rodolphe Agassiz (1835–1910) was born in Switzerland but emigrated to the USA with his eminent palaeontologist father, Louis Agassiz (see next entry), and made a fortune out of copper mining. [...] (Ref. 128868), visit book page.
More on authors: Goode & Bean.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; bathydemersal; depth range 534 - 2500 m (Ref. 4460). Deep-water; 70°N - 15°N, 72°W - 5°W (Ref. 57313)
Eastern Atlantic: Iceland and Greenland, west of British Isles, Morocco south to Mauritania. Western Atlantic: Davis Strait south to Honduras.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 123 cm SL male/unsexed; (Ref. 106777); common length : 70.0 cm SL male/unsexed; (Ref. 4736)
Bathypelagic (Ref. 58426). Found over sand and clay bottoms. Gregarious. Feeds mostly ctenophores, but also crustaceans, echinoderms and polychaetes (Ref. 4460). Minimum depth based from Ref. 117245.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Markle, D.F. and Y.I. Sazanov, 1990. Alepocephalidae. p. 246-264. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 1. (Ref. 4460)
IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))
Threat to humans
Harmless
Human uses
Fisheries: of potential interest
Tools
Special reports
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Internet sources
Estimates based on models
Preferred temperature (Ref.
123201): 3.3 - 5.9, mean 4 °C (based on 197 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00339 (0.00159 - 0.00723), 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 ±0.25 se; based on food items.
Resilience (Ref.
120179): Very Low, minimum population doubling time more than 14 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).
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Nutrients (Ref.
124155): Calcium = 12.5 [6.6, 34.8] mg/100g; Iron = 0.333 [0.135, 0.854] mg/100g; Protein = 11.8 [9.9, 15.0] %; Omega3 = 0.366 [0.143, 1.041] g/100g; Selenium = 33.7 [14.0, 88.7] μg/100g; VitaminA = 7.28 [1.53, 35.33] μg/100g; Zinc = 0.328 [0.209, 0.546] mg/100g (wet weight); based on
nutrient studies.