Overview

Comprehensive Description

Biology

Lives near the bottom in deep water, from 200 to at least 500, but possibly to 1000 m depth. Feeds on crustaceans (Ref. 3695).
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Distribution

Eastern Atlantic: along the coast of northwest Africa between 27°30'N to 10°10'N and 1°26'S to 26'14°S. Reported from Cape Verde (Ref. 27000). Western Indian Ocean: off Transkei, South Africa (Ref. 4181).
  • Kotlyar, A.N. 1986 Systematics and distribution of species of the genus Hoplostethus Cuvier (Beryciformes, Trachichthyidae). Trudy Inst. Okeanol. 121:97-140. (Ref. 9869)
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West coast of Africa (Atlantic) from 27°30'N to 10°10'N and from 1°26'S to 26°14'S; also reported from Cape Verde and western Indian Ocean off Transkei, South Africa.
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Physical Description

Morphology

Dorsal spines (total): 4 - 6; Dorsal soft rays (total): 12 - 13; Anal spines: 2 - 3; Analsoft rays: 8 - 10
  • Heemstra, P.C. 1986 Trachichthyidae. p. 410-413. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 4181)
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Size

Maximum size: 300 mm TL
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Max. size

30.0 cm TL (male/unsexed; (Ref. 3583))
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Diagnostic Description

Body, head and fins dark grey in color (Ref. 4181).
  • Heemstra, P.C. 1986 Trachichthyidae. p. 410-413. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 4181)
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Type Information

Paratype for Hoplostethus cadenati Quero
Catalog Number: USNM 213804
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Year Collected: 1973
Locality: Senegal, Atlantic
Depth (m): 487 to 500
Vessel: Thalassa
  • Paratype: Quero, J. C. 1974. Revue des Travaux de l'Institut des Peches Maritimes, Tome. 38 (1).
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Ecology

Habitat

Environment

bathypelagic; marine; depth range 70 - 1000 m (Ref. 9869), usually 200 - 700 m (Ref. 36731)
  • Bianchi, G., K.E. Carpenter, J.-P. Roux, F.J. Molloy, D. Boyer and H.J. Boyer 1999 Field guide to the living marine resources of Namibia. FAO species identification guide for fishery purposes. Rome, FAO. 265 p., 11 colour plates. (Ref. 36731)
  • Kotlyar, A.N. 1986 Systematics and distribution of species of the genus Hoplostethus Cuvier (Beryciformes, Trachichthyidae). Trudy Inst. Okeanol. 121:97-140. (Ref. 9869)
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Depth range based on 12 specimens in 1 taxon.
Water temperature and chemistry ranges based on 8 samples.

Environmental ranges
  Depth range (m): 295.5 - 734.5
  Temperature range (°C): 7.764 - 11.948
  Nitrate (umol/L): 15.121 - 38.570
  Salinity (PPS): 34.809 - 35.187
  Oxygen (ml/l): 1.256 - 4.927
  Phosphate (umol/l): 1.135 - 2.404
  Silicate (umol/l): 9.148 - 23.948

Graphical representation

Depth range (m): 295.5 - 734.5

Temperature range (°C): 7.764 - 11.948

Nitrate (umol/L): 15.121 - 38.570

Salinity (PPS): 34.809 - 35.187

Oxygen (ml/l): 1.256 - 4.927

Phosphate (umol/l): 1.135 - 2.404

Silicate (umol/l): 9.148 - 23.948
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Depth: 70 - 1000m.
From 70 to 1000 meters.

Habitat: bathypelagic. Lives near the bottom in deep water, from 200 to at least 500, but possibly to 1000 m depth. Feeds on crustaceans (Ref. 3695).
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Trophic Strategy

Feeds on pelagic crustaceans (Ref. 58748).
  • Macpherson, E. and B.A. Roel 1987 Trophic relationships in the demersal fish community off Namibia. S. Afr. J. Mar. Sci. 5:585-596. (Ref. 27637)
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Hoplostethus cadenati

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 3
Species With Barcodes: 1
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Conservation

Threats

Not Evaluated
  • IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
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Relevance to Humans and Ecosystems

Benefits

Importance

fisheries: commercial
  • Schneider, W. 1990 FAO species identification sheets for fishery purposes. Field guide to the commercial marine resources of the Gulf of Guinea. Prepared and published with the support of the FAO Regional Office for Africa. Rome: FAO. 268 p. (Ref. 2683)
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