Environment: milieu / climate zone / depth range / distribution range
Ekologi
laut; air tawar; payau dasar (demersal); katadromus (ruaya dari air tawar ke laut) (Ref. 46888). Subtropical; 16°S - 36°S
Southeast Atlantic: South African coastal waters from Walfish Bay to Natal.
Length at first maturity / Size / Weight / umur
Maturity: Lm 25.0 range ? - ? cm
Max length : 40.5 cm TL jantan/; (Ref. 3573); common length : 30.0 cm TL jantan/; (Ref. 2830)
Duri punggung (Keseluruhan (total)) : 5; duri punggung lunak (Keseluruhan (total)) : 8 - 9; Duri dubur: 3; Sirip dubur lunak: 9.
Found in coastal waters, mainly off rocky points and sandy beaches; may enter estuaries which serve as nursery areas (Ref. 27121). Feed mainly on diatoms and detritus, but also on planktonic crustaceans (Ref. 27121). Oviparous, eggs are pelagic and non-adhesive (Ref. 205). A primary target species of the inshore net fishery and much of it is sold salted and dried and known as 'bokkoms'. It is also an important exhibit species in public aquaria in South Africa. It is parasitised by the monogenean Gyrodactylus molweni on the external body surface (Ref. 124050).
Smith, M.M. and J.L.B. Smith, 1986. Mugilidae. p. 714-720. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin. (Ref. 4393)
Status IUCN Red List (Ref. 130435)
ancaman kepada manusia
Harmless
penggunaan manusia
Perikanan: komersial; Akuarium: Akuarium publik
Alat, peralatan
laporan khas
muat turun XML
Sumber internet
Estimates based on models
Preferred temperature (Ref.
123201): 14.8 - 27, mean 24.8 °C (based on 56 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5005 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01096 (0.00602 - 0.01998), b=2.95 (2.80 - 3.10), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Trophic level (Ref.
69278): 2.4 ±0.16 se; based on food items.
Daya lenting (Ref.
120179): sedang, Waktu penggandaan populasi minimum 1.4 - 4.4 tahun (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (31 of 100).
Nutrients (Ref.
124155): Calcium = 53.2 [14.2, 311.9] mg/100g; Iron = 0.741 [0.382, 1.308] mg/100g; Protein = 18.2 [16.8, 19.7] %; Omega3 = 0.681 [0.307, 1.551] g/100g; Selenium = 7.2 [3.0, 17.9] μg/100g; VitaminA = 11.3 [3.4, 37.6] μg/100g; Zinc = 0.691 [0.433, 1.097] mg/100g (wet weight);
