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Centrarchiformes (Basses) >
Oplegnathidae (Knifejaws)
Etymology: Oplegnathus: Greek, hoplon = weapon + Greek, gnathos = jaw (Ref. 45335).
Eponymy: John Benjamin Romer Robinson (1869–1949) was a South African attorney and businessman. [...] (Ref. 128868), visit book page.
More on author: Regan.
Environment: milieu / climate zone / depth range / distribution range
بوم شناسي
دريايي وابسته به آب سنگ; تغييرات عمق 20 - 100 m (Ref. 4387). Subtropical
Western Indian Ocean: occurs only in Mozambique and Natal, South Africa.
Size / Weight / سن
Maturity: Lm ?  range ? - ? cm
Max length : 60.0 cm TL جنس نر / بدون خواص جنسي; (Ref. 4387); common length : 40.0 cm TL جنس نر / بدون خواص جنسي; (Ref. 9660)
خارهاي باله پشتي (کل) : 11; شعاع نرم باله پشتي (کل) : 20 - 24; خارهاي باله مخرجي: 3; شعاع نرم باله مخرجي: 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
بلوغ | تولید مثل | تخم ریزی | تخم ها | Fecundity | توزاد ( لارو)
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)
وضعيت در فهرست قرمز IUCN (Ref. 130435: Version 2024-2)
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
Preferred temperature (Ref.
123201): 23.6 - 26.7, mean 25.8 °C (based on 16 cells).
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): 3.2 ±0.42 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): Moderate vulnerability (44 of 100).