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Centrarchiformes (Basses) >
Oplegnathidae (Knifejaws)
Etymology: Oplegnathus: Greek, hoplon = weapon + Greek, gnathos = jaw (Ref. 45335).
Eponymy: David Barry Conway (d: 1832) was a Royal navy surgeon who was medical superintendant on two different convict ships to Australia. [...] (Ref. 128868), visit book page.
More on author: Richardson.
Environment: milieu / climate zone / depth range / distribution range
بوم شناسي
دريايي وابسته به آب سنگ; تغييرات عمق ? - 150 m. Subtropical; 28°S -
Western Indian Ocean: South Africa.
Size / Weight / سن
Maturity: Lm ?  range ? - ? cm
Max length : 90.0 cm TL جنس نر / بدون خواص جنسي; (Ref. 4387)
خارهاي باله پشتي (کل) : 12; شعاع نرم باله پشتي (کل) : 11 - 14; خارهاي باله مخرجي: 3; شعاع نرم باله مخرجي: 11 - 13.
Found in coastal waters down at a depth of about 150 m. Adults found near reefs, juveniles found near floating objects. Feed on benthic invertebrates and algae (Ref. 5213). May live longer than 10 years. Spawning occurs throughout the year (Ref. 57746). Rarely hooked but easily speared (Ref. 4387).
Life cycle and mating behavior
بلوغ | تولید مثل | تخم ریزی | تخم ها | Fecundity | توزاد ( لارو)
van der Elst, R., 1981. A guide to the common sea fishes of southern Africa. C. Struik, Cape Town. 367 p. (Ref. 3670)
وضعيت در فهرست قرمز IUCN (Ref. 130435: Version 2024-1)
خطر برای انسان ها
Harmless
استفاده انسانی
ماهي گيري – شيلات: تجاري; ماهي ها ي سرگرم كننده: بله
ابزارها
گزارش های ويژه
بارگيری XML
منابع اينترنتي
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 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): 2.7 ±0.24 se; based on food items.
جهندگی (Ref.
120179): پايين ، كم, كمينه زمان لازم براي دو برابر شدن جمعيت 5/4 – 14 سال (tmax > 10).
Fishing Vulnerability (Ref.
59153): High vulnerability (56 of 100).
Nutrients (Ref.
124155): Calcium = 19.4 [8.6, 35.0] mg/100g; Iron = 0.515 [0.294, 0.877] mg/100g; Protein = 19.3 [18.1, 20.5] %; Omega3 = 0.148 [0.083, 0.264] g/100g; Selenium = 26.6 [12.9, 56.1] μg/100g; VitaminA = 14.8 [3.5, 62.2] μg/100g; Zinc = 0.602 [0.387, 0.917] mg/100g (wet weight);