South Africa country information

Common names: Natal knifejaw, Nataise kraaibek, Natalse kraaibek
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: commercial | Ref: van der Elst, R., 1993
Aquaculture: | Ref:
Regulations: no regulations | Ref: van der Elst, R., 1993
Uses: gamefish: yes;
Comments: Occurs in Natal. Status of stock indeterminate; locally vulnerable to spearfishing; no commercial value; minor component of recreational anglers' catch (Ref. 4332). Angling record: 2.2 kg; spearfishing record: 3.0 kg (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: van der Elst, R.P. and F. Adkin (eds.), 1991
National Database:

Common names from other countries

Perico de Natal, Nataise kraaibek, Natal-knivkæbefisk, ... more

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

> Centrarchiformes (Basses) > Oplegnathidae (Knifejaws)
Etymology: Oplegnathus: Greek, hoplon = weapon + Greek, gnathos = jaw (Ref. 45335).
More on author: Regan.

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

marin récifal; profondeur 20 - 100 m (Ref. 4387). Subtropical

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

Western Indian Ocean: occurs only in Mozambique and Natal, South Africa.

Taille / Poids / Âge

Maturity: L_m ? range ? - ? cm
Max length : 60.0 cm TL mâle / non sexé; (Ref. 4387); common length : 40.0 cm TL mâle / non sexé; (Ref. 9660)

Description synthétique Clés d'identification | Morphologie | Morphométrie

Épines dorsales (Total) : 11; Rayons mous dorsaux (Total) : 20 - 24; Épines anales: 3; Rayons mous anaux: 14 - 17. Adults dark grey in color; juveniles yellow with black bars (very similar to young Diplodus cervinus hottentotus.

Occur in coastal rocky and coral reefs to a depth of 100 m; juveniles pelagic in currents (Ref. 4332). Benthic omnivores. May live longer than 10 years. Spawning occurs throughout the year (Ref. 57746). Marketed fresh (Ref. 9660).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larves

Référence principale Upload your references | Références | Coordinateur | Collaborateurs

Heemstra, P.C., 1986. Oplegnathidae. p. 632-633. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 4387)

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

Non évalué

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

Harmless

Utilisations par l'homme

Pêcheries: commercial; pêche sportive: oui

FAO(Publication : search) | FishSource |

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Estimates based on models

Preferred temperature (Ref. 115969): 23.6 - 26.7, mean 25.8 (based on 16 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01995 (0.00906 - 0.04395), b=3.01 (2.83 - 3.19), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245).

Niveau trophique (Ref. 69278): 3.2 ±0.42 se; based on food items.

Résilience (Ref. 120179): Faible, temps minimum de doublement de population : 4,5 à 14 années (tmax > 10).

Fishing Vulnerability (Ref. 59153): Moderate vulnerability (44 of 100).

Catégorie de prix (Ref. 80766): Unknown.

Oplegnathus robinsoni Regan, 1916