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Gymnocrotaphus curvidens Günther, 1859

Janbruin
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Gymnocrotaphus curvidens   AquaMaps   Data sources: GBIF OBIS
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Image of Gymnocrotaphus curvidens (Janbruin)
Gymnocrotaphus curvidens
Picture by King, D.R.


South Africa country information

Common names: Janbruin, Janbruin
Occurrence: endemic
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Ranges from the Cape to Durban (Ref. 3198). Nowhere abundant (Ref. 3198). Also Ref. 12484.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/sf.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Smith, J.L.B. and M.M. Smith, 1986
National Database:

Common names from other countries

Classification / Names Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa

> Eupercaria/misc (Various families in series Eupercaria) > Sparidae (Porgies)
Etymology: Gymnocrotaphus: Greek, gymnos = naked + Greek, krotaphos = front, head (Ref. 45335).
  More on author: Günther.

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

marin démersal; profondeur 1 - 80 m (Ref. 3198).   Subtropical

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

Southeast Atlantic: endemic to South Africa, from the Cape to Durban.

Taille / Poids / Âge

Maturity: Lm ?  range ? - ? cm
Max length : 50.0 cm TL mâle / non sexé; (Ref. 3198)

Description synthétique Morphologie | Morphométrie

Épines dorsales (Total): 10; Rayons mous dorsaux (Total): 11-12; Épines anales 3; Rayons mous anaux: 9 - 10. Eyes deep blue; the brown of live specimens fades quickly, leaving orange lines along the scale rows; sometimes with narrow dark crossbars (Ref. 3198).

Biologie     Glossaire (ex. epibenthic)

Occurs mostly in shallow rocky areas, but also found down to 80 m. Flesh excellent.

Life cycle and mating behavior Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Référence principale Upload your references | Références | Coordinateur | Collaborateurs

Smith, J.L.B. and M.M. Smith, 1986. Sparidae. p. 580-594. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 3198)

Statut dans la liste rouge de l'IUCN (Ref. 130435)

  Préoccupation mineure (LC) ; Date assessed: 01 December 2009

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Harmless




Utilisations par l'homme

Pêcheries: commercial
FAO(Publication : search) | FishSource |

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Sources Internet

Aquatic Commons | BHL | Cloffa | Websites from users | FishWatcher | CISTI | Catalog of Fishes(Genre, Espèce) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(génôme, nucléotide) | GloBI | GOBASE | | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | Aquariums publics | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Arbre de Vie | Wikipedia(aller à, chercher) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Preferred temperature (Ref. 115969): 18 - 27.5, mean 25.8 (based on 84 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 1.0000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01259 (0.00609 - 0.02604), b=3.04 (2.87 - 3.21), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Niveau trophique (Ref. 69278):  3.4   ±0.2 se; based on size and trophs of closest relatives
Résilience (Ref. 120179):  Faible, temps minimum de doublement de population : 4,5 à 14 années (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Moderate vulnerability (40 of 100).
Catégorie de prix (Ref. 80766):   Very high.