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Polypteriformes (Bichirs) >
Polypteridae (Bichirs)
Etymology: Polypterus: Greek, poly = a lot of + Greek, pteron = wing, fin (Ref. 45335); bichir: Named after the local name for the fish (Ref. 43537).
More on author: Lacepède.
محیط زیست: محیط زیست / منطقه آب و هوایی / تغييرات عمق / محدوده توزیع
بوم شناسي
; آب شيرين نزديك كف زي; رود رو (Ref. 51243). Tropical
Africa: The subspecies Polypterus bichir bichir is known from the Chad basin, Nile River basin and Lake Turkana (Ref. 2835, 81263). Reports from Lake Turkana and the Ouémé are questionable as unsupported by photographs or museum specimens (Ref. 122071). The subspecies Polypterus bichir lapradei is known from the rivers Senegal, Gambia, Geba, Volta and Niger (Ref. 2835, 81263).
اندازه / وزن / سن
بلوغ: Lm ? range ? - ? cm
Max length : 74.0 cm TL جنس نر / بدون خواص جنسي; (Ref. 81263); بيشينه وزن گزارش شده: 2.7 kg (Ref. 367)
خارهاي باله پشتي (کل) : 13 - 18; شعاع نرم باله پشتي (کل) : 0; خارهاي باله مخرجي: 0; شعاع نرم باله مخرجي: 13 - 16; مهره ها: 61 - 62. Diagnosis: Polypterus bichir is characterized by a lower jaw slightly longer than upper jaw and a pectoral fin reaching the first dorsal ray (Ref. 2835, 42908, 81263). The subspecies P. bichir bichir has 63 to 70 scales in lateral line, 14 to 18 dorsal fin rays and 11 to 13 pelvic fin rays (Ref. 367, 81263). The subspecies P. bichir lapradei has 58 to 68 scales in lateral line, 13 to 15 dorsal fin rays and 13 to 16 pelvic fin rays (Ref. 367, 81263).
Body shape (shape guide): elongated; Cross section: circular.
Facultative air-breathing (Ref. 126274); Polypterus bichir bichir likes shallow water and will often lie basking fo hours near the surface, but when swimming the fish is very pliant, and can turn and twist like an eel (Ref. 4904). The eggs are deposited in weeds, where the adult fish guards the eggs and young (Ref. 36900). It feeds on bottom-feeding fish (Ref. 36900) and is essentially piscivorous (Ref. 367).
چرخه زندگی و رفتار جفتگیری
بلوغ | تولید مثل | تخم ریزی | تخم ها | باروری | توزاد ( لارو)
Gosse, J.P. and J. Daget, 2003. Polypteridae. p. 101-112. In D. Paugy, C. Lévêque and G.G Teugels (eds.) The fresh and brackish water fishes of West Africa Volume 1. Coll. faune et flore tropicales 40. Institut de recherche de développement, Paris, France, Muséum national d'histoire naturelle, Paris, France and Musée royal de l'Afrique Central, Tervuren, Belgium, 457p. (Ref. 81263)
وضعيت در فهرست قرمز IUCN (Ref. 130435: Version 2025-2 (Global))
خطر برای انسان ها
Harmless
استفاده انسانی
ماهي گيري – شيلات: تجاري
ابزارها
گزارش های ويژه
بارگيری XML
منابع اينترنتي
تخمینها بر اساس مدلها
شاخص تنوع فیلوژنتیکی (مرجع
82804): PD
50 = 0.5003 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00457 (0.00194 - 0.01077), b=3.05 (2.85 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
سطح تروفیک (مرجع
69278): 4.5 ±0.80 se; based on food items.
جهندگی (مرجع
120179): زياد, كمينه زمان لازم براي دو برابر شدن جمعيت ، كمتر از 15 ماه (Preliminary K or Fecundity.).
آسیبپذیری ماهیگیری (Ref.
59153): Moderate to high vulnerability (50 of 100).
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