Environment: milieu / climate zone / depth range / distribution range
Ecologie
marien rifbewoner; diepte 10 - ? m (Ref. 5213). Subtropical; 12°S - 36°S, 10°E - 34°E
Southeast Atlantic to southwestern Indian Ocean: southern Angola to Natal, South Africa.
Lengte bij maturiteit / Grootte / Gewicht / Leeftijd
Maturity: Lm 34.0 range ? - ? cm
Max length : 80.0 cm TL mannelijk / geslacht onbekend; (Ref. 4370); max. gepubliceerd gewicht: 6.5 kg (Ref. 4370)
Dorsale stekels (totaal) : 10; Dorsale zachte stralen (totaal) : 18 - 19; Anale stekels: 3; Anale zachte stralen: 13 - 14. Changes from black to silver almost instantly to blend with environment; occasionally mottled or with 7-9 crossbars (Ref. 4370).
Found in inshore reefs, rocky and sandy areas. Feeds on mollusks, crustaceans, and other invertebrates (Ref. 5213). Abundant in winter, breeding occurs in deeper water. Becoming scarce because of overfishing (Ref. 36731).
Levenscyclus en paargedrag
Maturities | Voortplanting | Spawnings | Egg(s) | Fecundities | Larven
Smith, M.M., 1986. Coracinidae. p. 601-602. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 4370)
Status op de Rode Lijst van het IUCN (Ref. 130435)
Gevaar voor de mens
Harmless
Gebruik door de mens
Visserij: commercieel; sportvis: ja
Tools
Speciale rapporten
Download XML
Internetbronnen
Estimates based on models
Preferred temperature (Ref.
123201): 14.4 - 24.7, mean 16.7 °C (based on 20 cells).
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01622 (0.00664 - 0.03964), b=3.01 (2.79 - 3.23), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.3 ±0.45 se; based on food items.
Generation time: 8.5 ( na - na) years. Estimated as median ln(3)/K based on 2
growth studies.
Weerstandsvermogen (Ref.
120179): laag, minimale populatieverdubbelingstijd 4,5-14 jaar (K=0.13).
Fishing Vulnerability (Ref.
59153): High vulnerability (60 of 100).
Nutrients (Ref.
124155): Calcium = 16.5 [7.8, 32.0] mg/100g; Iron = 0.449 [0.259, 0.748] mg/100g; Protein = 19.3 [18.1, 20.5] %; Omega3 = 0.155 [0.089, 0.271] g/100g; Selenium = 24.8 [11.8, 51.6] μg/100g; VitaminA = 23.6 [5.9, 90.6] μg/100g; Zinc = 0.598 [0.394, 0.888] mg/100g (wet weight);
