Alepocephalus rostratus, Risso's smooth-head

Alepocephalus rostratus Risso, 1820

Risso's smooth-head
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Alepocephalus rostratus   AquaMaps   Data sources: GBIF OBIS
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Image of Alepocephalus rostratus (Risso\
Alepocephalus rostratus
Picture by Wirtz, P.

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Alepocephaliformes (Slickheads and tubeshoulders) > Alepocephalidae (Slickheads)
Etymology: Alepocephalus: Greek, alepos, alepidotos = without scales + Greek, kephale = head (Ref. 45335).
More on author: Risso.

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; bathydemersal; depth range 300 - 2250 m (Ref. 28822). Deep-water; 64°N - 17°S, 22°W - 22°E (Ref. 57317)

Distribution Territories | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Eastern Atlantic: northeast Atlantic and western Mediterranean to Cape Verde (Ref. 4736); Morocco to Cameroon, then from Angola to Namibia (Ref. 4460).

Length at first maturity / Size / Weight / Age

Maturity: Lm 27.7  range ? - ? cm
Max length : 50.0 cm SL male/unsexed; (Ref. 4460); max. reported age: 23 years (Ref. 32893)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 16 - 20; Anal spines: 17 - 20.
Body shape (shape guide): elongated.

Biology     Glossary (e.g. epibenthic)

Found over soft bottoms (Ref. 4736). Feeds on pelagic crustaceans like euphausiids, decapods and mysids (Ref. 27637).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Markle, D.F., 1981. Family Alepocephalidae. In W. Fischer, G. Bianchi and W.B. Scott (eds.) FAO species identification sheets for fishery purposes. Eastern Central Atlantic; fishing areas 34, 47 (in part). Department of Fisheries and Oceans Canada and FAO. vols. 1-7. pag. var. (Ref. 2719)

IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))

  Least Concern (LC) ; Date assessed: 11 July 2012

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fisheries: of no interest
FAO - Publication: search | FishSource | Sea Around Us

More information

Trophic ecology
Food items (preys)
Diet composition
Food consumption
Food rations
Predators
Ecology
Ecology
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Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
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Abundance
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Maturity
Maturity/Gills rel.
Fecundity
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References

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Summary page | Point data | Common names | Photos

Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | National databases | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index
(Ref. 82804) 		PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.00316 (0.00189 - 0.00529), b=3.17 (3.02 - 3.32), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trophic level
(Ref. 69278) 		3.7   ±0.2 se; based on diet studies.
Generation time 13.7 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies.
Resilience
(Ref. 120179) 		Very Low, minimum population doubling time more than 14 years (Preliminary K or Fecundity.).
Fishing Vulnerability
(Ref. 59153) 		High vulnerability (60 of 100). 🛈
Climate Vulnerability
(Ref. 125649) 		Low vulnerability (12 of 100). 🛈
Nutrients
(Ref. 124155) 		Calcium = 20.6 [11.0, 59.7] mg/100g; Iron = 0.387 [0.145, 1.009] mg/100g; Protein = 11.5 [9.6, 14.7] %; Omega3 = 0.41 [0.16, 1.12] g/100g; Selenium = 26.1 [10.0, 66.7] μg/100g; VitaminA = 12.7 [2.6, 62.0] μg/100g; Zinc = 0.436 [0.272, 0.726] mg/100g (wet weight);