Environment: milieu / climate zone / تغييرات عمق / distribution range
بوم شناسي
دريايي; آب شيرين; لب شور نزديك كف زي; دريا كوچ (Ref. 51243). Tropical
Africa: Kenya to South Africa (Ref. 3506), uncommon south of the Save River (Ref. 7248, 52193). Also Reunion and Mauritius (Ref. 33390). Dominant eel species in the Zambezi system and farther north in East Africa (Ref. 52193).
Size / Weight / سن
بلوغ: Lm ? range ? - ? cm
Max length : 175 cm TL جنس نر / بدون خواص جنسي; (Ref. 48660); بيشينه وزن گزارش شده: 20.6 kg (Ref. 52193); بيشينه سن گزارش شده: 15 سال ها (Ref. 48660)
خارهاي باله پشتي (کل) : 0; خارهاي باله مخرجي: 0.
Body shape (shape guide): eel-like; Cross section: circular.
Migratory species which breeds in the ocean (Ref. 52331), it requires rivers and oceans (Ref. 30558). Young fish migrate upstream with a continued feeding mode, especially on invertebrates found on rocks and logs washed by fast moving waters (Ref. 30558). They inhabit various niches in a river system (Ref. 13337) and penetrate far inland, surmounting formidable barriers in its upstream migration, including the Kariba and Cahora Bassa dams (Ref. 52193). Adults need moving water to migrate back to the ocean, especially after heavy rains (Ref. 30558). Their food consists of crabs, frogs and insects (Ref. 30558), and even fish, including trout in the streams of the eastern highlands of Zimbabwe (Ref. 2478, 52193). Caught with various types of nets.
Life cycle and mating behavior
بلوغ | تولید مثل | تخم ریزی | تخم ها | Fecundity | توزاد ( لارو)
Skelton, P.H., 1993. A complete guide to the freshwater fishes of southern Africa. Southern Book Publishers. 388 p. (Ref. 7248)
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 (مرجع
123201): 25 - 28.7, mean 27.1 °C (based on 306 cells).
Phylogenetic diversity index (مرجع
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00074 (0.00039 - 0.00139), b=3.18 (3.02 - 3.34), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Trophic level (مرجع
69278): 3.8 ±0.7 se; based on size and trophs of closest relatives
جهندگی (مرجع
120179): پايين ، كم, كمينه زمان لازم براي دو برابر شدن جمعيت 5/4 – 14 سال (tmax=15).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).
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