Environment: milieu / climate zone / depth range / distribution range
البيئة
بحري; المياه العذبة; مياه مخلوطة. Subtropical; 27°S - 35°S
Southeast Atlantic: restricted from Lüderitz, Namibia to northern Natal, South Africa.
Length at first maturity / الحجم / وزن / العمر
Maturity: Lm 4.0 range ? - ? cm
Max length : 11.0 cm SL ذكر/ مختلط الجنس; (Ref. 7248)
الأشواك الظهرية (المجموع) : 6 - 9; الأشعة الظهرية الناعمة (المجموع) : 11 - 15; شوكة شرجية: 1; أشعه شرجية لينه: 15 - 18. Body silvery and translucent with a midlateral band; dusky upper surface (Ref. 4125).
Forms schools along the coast and in estuaries, especially during spring (Ref. 3302). Also found in coastal lakes (Ref. 7248). Small individuals filter out small organisms such as phytoplankton and rotifers. Above 3.5 cm TL, it feeds mostly on crustaceans especially amphipods taken from the water column as well as off the bottom. Preyed upon by fishes and birds (Ref. 7248).
Life cycle and mating behavior
Maturities | التكاثر | Spawnings | Egg(s) | Fecundities | Larvae
Skelton, P.H., 1993. A complete guide to the freshwater fishes of southern Africa. Southern Book Publishers. 388 p. (Ref. 7248)
IUCN Red List Status (Ref. 130435)
استخدامات بشرية
مصائد: مصائد تستهلك محلينا; طعم: usually
أدوات
تقارير خاصة
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مصادر علي الأنترنت
Estimates based on models
Preferred temperature (Ref.
123201): 14.3 - 23.9, mean 19.5 °C (based on 14 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00776 (0.00426 - 0.01415), b=3.14 (2.97 - 3.31), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
مستوى غذائي (Ref.
69278): 3.4 ±0.46 se; based on food items.
المرونه (Ref.
120179): وسيط, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع 1.4-4.4 سنة (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
