محیط زیست: محیط زیست / منطقه آب و هوایی / تغييرات عمق / محدوده توزیع
بوم شناسي
; آب شيرين نزديك كف زي; رود رو (Ref. 51243); تغييرات عمق 10 - ? m (Ref. 7248). Tropical; 22°C - 23°C (Ref. 2059); 25°N - 22°S, 16°W - 40°E
Africa: Nile, Congo system, upper and middle Zambezi (Ref. 3820). Reported from Lake Rukwa and the lower Zambezi (Ref. 95585). Also from Lakes Tanganyika and Edward (Ref. 7248). In West Africa known from the Gambia, Upper Senegal, Niger, Benue, Lake Chad, Volta, and coastal basins from Guinea to Nigeria, including the delta of Niger and the Cross river (Ref. 57129). In Lower Guinea present in the Cross and Sanaga in Cameroon and the Ogowe in Gabon (Ref. 81644).
اندازه / وزن / سن
بلوغ: Lm ?  range ? - ? cm
Max length : 150 cm SL جنس نر / بدون خواص جنسي; (Ref. 4967); بيشينه وزن گزارش شده: 55.0 kg (Ref. 7248)
خارهاي باله پشتي (کل) : 0; شعاع نرم باله پشتي (کل) : 26 - 35; شعاع نرم باله مخرجي: 42 - 52; مهره ها: 55 - 61. Diagnosis: length of rayed dorsal fin 27-36% standard length; 26-35 dorsal-fin rays (Ref. 57129, 81644). Length of adipose fin 24-34% standard length (Ref. 57129, 81644), about equal to the length of the rayed dorsal fin (Ref. 28714). Width of vomerine tooth plate 25.0-32.2%, and width of premaxillary tooth plate 29.5-36.9% head length (Ref. 57129, 81644). Pectoral spine with strong, downward-pointed serrations on the anterior side (Ref. 270, 57129, 81644). Length of pectoral fin 12.7-18.0% SL (mean 16) (Ref. 81644). Posterior part of adipose fin blackish (Ref. 4967, 57129). Caudal fin with a whitish cross-bar (Ref. 57129). Head long, broad and somewhat rectangular in dorsal outline (Ref. 270), its length 28.4-35.9% SL (Ref. 81644). Snout broadly rounded; eyes superolateral in position; frontal fontanelle long and narrow; occipital fontanelle oval-shaped; tooth plates wide; suprabranchial organ well developed; caudal fin barred; openings of secondary canals hardly visible but display a regular pattern (Ref. 270).
Body shape (shape guide): elongated; Cross section: circular.
Facultative air-breathing (Ref. 126274); An uncommon species which inhabits large rivers (Ref. 4967). Largest freshwater species in southern Africa; occurs in large deep rivers within the mainstream or in deep pools and lakes or backwaters (Ref. 7248, 78218). Most active at night, feeding on any available food, including invertebrates and insects when small, fish and other small vertebrates when large; scavenges off large carcasses and offal from riverside villages; live for 12 or more years (Ref. 7248). Maximum reported size for West Africa and Lower Guinea: 610 mm TL (Ref. 57129, 81643).
چرخه زندگی و رفتار جفتگیری
بلوغ | تولید مثل | تخم ریزی | تخم ها | باروری | توزاد ( لارو)
Teugels, G.G., B. Denayer and M. Legendre, 1990. A systematic revision of the African catfish genus Heterobranchus Geoffroy-Saint-Hilaire, 1809 (Pisces: Clariidae). Zool. J. Linn. Soc. 98:237-257. (Ref. 270)
وضعيت در فهرست قرمز IUCN (Ref. 130435: Version 2025-2 (Global))
خطر برای انسان ها
Harmless
استفاده انسانی
ماهي گيري – شيلات: ارزش تحاري اندك; آبزي پروري: تجاري; ماهي ها ي سرگرم كننده: بله
ابزارها
گزارش های ويژه
بارگيری XML
منابع اينترنتي
تخمینها بر اساس مدلها
شاخص تنوع فیلوژنتیکی (مرجع
82804): PD
50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00776 (0.00607 - 0.00993), b=2.93 (2.87 - 2.99), in cm total length, based on LWR estimates for this species (Ref.
93245).
سطح تروفیک (مرجع
69278): 3.7 ±0.66 se; based on food items.
Generation time: 10.0 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
جهندگی (مرجع
120179): پايين ، كم, كمينه زمان لازم براي دو برابر شدن جمعيت 5/4 – 14 سال (K=0.11; tmax > 11; Fec > 10,000).
آسیبپذیری ماهیگیری (Ref.
59153): High to very high vulnerability (69 of 100).
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مواد مغذی (Ref.
124155): Calcium = 51.6 [22.9, 102.5] mg/100g; Iron = 1.02 [0.53, 1.99] mg/100g; Protein = 16.9 [15.4, 18.6] %; Omega3 = 0.248 [0.091, 0.639] g/100g; Selenium = 131 [55, 297] μg/100g; VitaminA = 19.2 [6.5, 51.2] μg/100g; Zinc = 1.06 [0.68, 1.56] mg/100g (wet weight);