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Gephyroberyx darwinii  (Johnson, 1866)

Darwin's slimehead
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Native range | All suitable habitat | PointMap | Year 2100
This map was computer-generated and has not yet been reviewed.
Gephyroberyx darwinii   AquaMaps   Data sources: GBIF OBIS
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Image of Gephyroberyx darwinii (Darwin
Gephyroberyx darwinii
Picture by Delph, R.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Beryciformes (Sawbellies) > Trachichthyidae (Slimeheads)

Environment / Climate / Range Ecology

Marine; benthopelagic; depth range 9 - 1210 m (Ref. 9872), usually 200 - 500 m (Ref. 3583).   Subtropical; 43°N - 35°S

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 60.0 cm TL male/unsexed; (Ref. 3695); common length : 45.0 cm TL male/unsexed; (Ref. 3695)

Short description Morphology | Morphometrics

Dorsal spines (total): 7 - 8; Dorsal soft rays (total): 13-14; Anal spines: 3; Anal soft rays: 11 - 12. Head with a concave forehead profile and with large mucous cavities covered by tough skin; mouth large and oblique; opercle and preopercle each with a large strong spine; body deep, about 2.1 times in SL; ventral keel with 10 - 14 very robust scutes; caudal fin forked but rounded. Color of head and body is dusky pink, sides with silvery tinge, fins red; tongue and gill cavity blackish; palate white to red (Ref. 7331). Pale beet red to light rosy. Back light red to brownish red, lower sides light silvery gray (Ref. 37108).

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

Eastern Atlantic: Madeira and the Canary Islands to Senegal, Gulf of Guinea and South Africa. Western Atlantic: southern Scotian Shelf, Canada to Greater Antilles, western Caribbean, Panama and northern Gulf of Mexico (Ref. 7334). Indo-Pacific: off Natal (South Africa), Bay of Bengal, southern Australia, Chatham Plateau around New Zealand, and the Philippines (Ref. 4181). Also in northern South America (Moore, pers. comm.).

Biology     Glossary (e.g. epibenthic)

Lives close to or on the bottom of the upper continental slope. Prefers hard substrates. Young specimens feed on small shrimps and fish (Ref. 4784). A deep sea species, nonetheless, the young are often found near the coast (Ref. 9137). Utilized as fishmeal and source of oil in eastern central Atlantic (Ref. 3695).

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

Main reference Upload your references | References | Coordinator : Moore, Jon A. | Collaborators

Maul, G.E., 1990. Trachichthyidae. p. 620-622. In J.C. Quéro, 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. 2. (Ref. 3583)

IUCN Red List Status (Ref. 96402)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

Fisheries: commercial
FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.7500   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01479 (0.00790 - 0.02770), b=3.09 (2.92 - 3.26), based on LWR estimates for species & (Sub)Family-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  3.9   ±0.65 se; Based on food items.
Resilience (Ref. 69278):  Very Low, minimum population doubling time more than 14 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  High to very high vulnerability (69 of 100) .
low
Price category (Ref. 80766):   Low.