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Atractoscion aequidens

(African Weakfish)

Overview

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Family : Drums or croakers ; Found in coastal waters , over sandy and sandy mud bottom . Juveniles enter estuaries. Adults feed on pelagic fishes at night. Often caught with Umbrina canariensis . Marketed fresh, flesh highly esteemed[1]. Feeds on pelagic fish such as mackerel and horse mackerel[2].

Common Names

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Click on the language to view common names.

Common Names in Afrikaans:

Geelbek

Common Names in Arabic:

Shmahi, Yanam

Common Names in Danish:

Afrikansk Trommefisk

Common Names in English:

African Weakfish, Cape Salmon, Corvina, Geelbeck Croaker, Geelbeck Cwaker, Geelbeek, Geelbek, Geelbek Croaker, Tera Undermouth, Teraglin

Common Names in French:

Téraglin, Téraglin

Common Names in German:

Afrikanischer Umberfisch

Common Names in Mandarin Chinese:

非洲錘形石首魚, éžæ´²éŒ˜å½¢çŸ³é¦–é­š, éžæ´²é”¤å½¢çŸ³é¦–é±¼

Common Names in Polish:

Kulbiniec Zlotousty

Common Names in Portuguese:

Congueira, Corvina, Corvina De Boca Amarela, Corvina Morada, Corvina-De-Boca-Amarela, Corvina-Preta, Pungo-Amarelo

Common Names in Spanish:

Corvina Prieta, Corvinata Prieta, Teraglin

Description

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Family Sciaenidae

Drums or croakers are distributed in the Atlantic, Indian and Pacific oceans. Dorsal fin long, having a deep notch between the spinous and soft-rayed parts, but the parts rarely separate. Spinous part with 6-13 spines; the soft-rayed part with 1 spine and usually 20-35 soft rays . Anal fin having 1 or 2 usually weak spines; soft rays 6-13. Lateral line reaching end of caudal fin. Slightly emarginate to rounded caudal fin. Opercle with the upper bony edge forked . Gill opening with a bony flap above it. Some species with 1 barbel or a patch of small barbels on chin. Large cavernous canals in head . Snout and lower jaw with conspicuous pores . Vomer and palatine toothless. Swim bladder usually having many branches and used as a resonating chamber. Exceptionally large otoliths. Vertebrae 24-29. Bottom dwelling carnivores , feeding on benthic invertebrates and small fishes . Juveniles are popular aquarium fishes, but difficult to maintain.The family Sciaenidae belongs to the Class Actinopterygii (ray-finned fishes) and the Order Perciformes. It contains 70 genera and 270 species. It may be found in Marine , Brackish , and Freshwater environments and is primarily Marine. Some members of this family are used in the aquarium trade. Reproductively, most members of this family are nonguarders. The main mode of swimming of adult fish in this family is labriform . Compared with other fish, the activity level of this family tends to be normal. Members of this family have been dated back to the Miocene epoch of the Tertiary period. This family may be found from 60° n to 40° s and 125° w to 154° e. Etymology of this family name : Greek, skiaina = a kind of fish

Physical Description

Species Atractoscion aequidens

Males are commonly 90 cm (Standard Length) in length when caught/marketed, but may be as large as 130 cm (Total Length).

Habitat

May be found at depths of 15 to 200 meters. Usually found at depths of 100 to 200 meters.

Biome: Brackish water, saltwater . Benthopelagic.

Taxonomy

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Ambiguous Synonyms

  1. Cynoscion nebulosus (Cuvier, 1830)
  2. Otolithus nebulosus (Non Cuvier, 1830)

Unambiguous Synonyms

  1. Atractoscion stelodus /i> (Günther, 1867)
  2. Otolithus aequidens Cuvier, 1830
  3. Otolithus atelodus Günther, 1867
  4. Otolithus teraglin Macleay, 1880

Notes

Name Status: Accepted Name . Latest taxonomic scrutiny: Data last modified by FishBase 10-Feb-1995

Similar Species

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Members of the genus Atractoscion

There are approximately 4 species in this genus:

A. acquidens · A. aequidens (African Weakfish) · A. atelodus · A. nobilis (White Weakfish)

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal March 02, 2008:

Identifiers

Footnotes

  1. Sasaki, K. (2001). Sciaenidae. Croakers (drums). p. 3117-3174. In K.E. Carpenter and V.H. Niem (eds.) FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Volume 5. Bony fishes part 3 (Meni [back]
  2. 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. [back]
Last Revised: 2009-04-24