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

Klassifizierung / Names Namen | Synonyme | Catalog of Fishes(Gattung, Arten) | 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 Ökologie

seewasser riff-verbunden; tiefenbereich 20 - 100 m (Ref. 4387). Subtropical

Verbreitung Länder | FAO Gebiete | Ecosystems | Vorkommen | Point map | Einführungen | Faunafri

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

Size / Gewicht / Alter

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

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

Rückenflossenstacheln (insgesamt) : 11; Rückenflossenweichstrahlen (insgesamt) : 20 - 24; Afterflossenstacheln: 3; Afterflossenweichstrahlen: 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 | Fortpflanzung | Spawnings | Egg(s) | Fecundities | Larven

Hauptreferenz Upload your references | Referenzen | Koordinator | Partner

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)

IUCN Rote Liste Status (Ref. 130435)

Nicht untersucht

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

Fischereien: kommerziell; Sportfisch: ja

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).

Trophic level (Ref. 69278): 3.2 ±0.42 se; based on food items.

Widerstandsfähigkeit (Ref. 120179): niedrig, Verdopplung der Population dauert 4,5 - 14 Jahre. (tmax > 10).

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

Preiskategorie (Ref. 80766): Unknown.

Oplegnathus robinsoni Regan, 1916