分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 居于水底的; 河川洄游 (Ref. 51243).
Africa: Nile River, Chad basin, Niger River, Volta River, Bandama River, Comoé River and Ouémé River (Ref. 2835, 81263).
Length at first maturity / 大小 / 重量 / 年龄
Maturity: Lm 32.0  range ? - ? cm
Max length : 65.5 cm SL 雄鱼/尚未辨别雌雄; (Ref. 123661); 最大体重: 3.4 kg (Ref. 123661)
简单描述
检索表 | 型态特徵 | 形态测量图
背棘 (总数) : 11 - 14; 臀棘: 0; 臀鳍软条: 9 - 18; 脊椎骨: 53 - 57. Diagnosis: lower jaw longer than upper jaw; pectoral fin reaching first dorsal ray (Ref. 2835, 42908, 81263). 11-14 dorsal finlets (Ref. 28714, 122071), the first situated above the pectoral fins; head flat or slightly concave between the eyes but not convex (Ref. 28714). Third dorsal scale row the first to reach ventral midline; predorsal length short, 21.7-27.4 % SL; few (4-5, rarely 6), broad (more than 3 scale rows wide), dark transverse bars extending from dorsum to middle of flank by confluence of dorsal and lateral blotches sometimes including ventrolateral markings (Ref. 122071).
Facultative air-breathing (Ref. 126274); Inhabits swamps and rivers. Essentially piscivorous (Ref. 9695, 28714). Diet includes snails and crustaceans (Ref. 30488).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
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)
人类利用
渔业: 低经济
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特别资料
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5002 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00437 (0.00273 - 0.00698), b=3.08 (2.94 - 3.22), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
营养阶层 (Ref.
69278): 3.8 ±0.63 se; based on food items.
回复力 (Ref.
120179): 高度, 族群倍增时间少于 15个月 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (52 of 100).
Nutrients (Ref.
124155): Calcium = 126 [54, 243] mg/100g; Iron = 1.55 [0.93, 2.46] mg/100g; Protein = 18 [17, 19] %; Omega3 = 0.275 [0.116, 0.669] g/100g; Selenium = 69.6 [31.2, 151.4] μg/100g; VitaminA = 33.5 [12.8, 91.3] μg/100g; Zinc = 1.26 [0.86, 1.81] mg/100g (wet weight);