Common names from other countries
分類 / Names
共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
Environment: milieu / climate zone / depth range / distribution range
生態学
; 新鮮な水 外洋の; pH range: 6.0 - 6.5; dH range: 4 - 18; potamodromous (Ref. 51243). Tropical; 24°C - 27°C (Ref. 13371)
Africa: Chad, Niger, Volta, Gambia, Senegal (Ref. 2880, 81279). Outside West Africa this species is found in Nile basin, including Lower Nile, White Nile, Blue Nile and Murchison Nile (Ref. 5331) and Lake Mobutu Sese Seko [=Lake Albert] and Omo-Lake Turkana system (Ref. 2880).
Length at first maturity / サイズ / 重さ / 年齢
Maturity: Lm ?, range 22 - ? cm
Max length : 55.0 cm TL オス/雌雄の選別がない; (Ref. 2880); 最大公表体重: 600.00 g (Ref. 3799); 最大記録サイズ: 7 年 (Ref. 2758)
簡単な記述
検索表 | 形態学 | 形態計測学
肛門の骨: 0; 臀鰭: 21 - 26; 脊つい: 45 - 48. Diagnosis: multicuspid teeth set in two rows and not overlapping the jaws when the mouth is closed; teeth stout, not compressed; eyes without or with weakly developed adipose lids; anal fin with 22-26 rays (Ref. 28714). At most 27 gill rakers on lower limb of first gill arch (18-27); 3 unbranched and 18-23 branched anal-fin rays; dorsal-fin origin distinctly behind level of pelvic-fin insertions (Ref. 2880, 81279). Scales small (Ref. 28714), 43-51 in lateral line (Ref. 2880, 81279).
Omnivorous, stomachs examined contained seeds, zooplankton, insects or fish fry (Ref. 28714). Two subspecies: Alestes dentex dentex in the Nile and Alestes dentex sethente (Valenciennes, 1849) in Sudanian basins of West Africa.
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生
Up to 300 eggs are scattered on the bottom. Larvae hatch after about 6 days.
Paugy, D., 1990. Characidae. p. 195-236. In C. Lévêque, D. Paugy and G.G. Teugels (eds.) Faune des poissons d'eaux douces et saumâtres de l'Afrique de l'Ouest. Tome I. Coll. Faune Tropicale n° XXVIII. Musée Royal de l'Afrique Centrale, Tervuren et O.R.S.T.O.M., Paris, 384 p. (Ref. 2880)
CITES (Ref. 128078)
Not Evaluated
Human uses
水産業: 商業
用具
特記事項
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インターネットの情報源
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01148 (0.00528 - 0.02495), b=3.00 (2.82 - 3.18), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
栄養段階 (Ref.
69278): 2.9 ±0.37 se; based on food items.
回復力 (Ref.
120179): 手段, 1.4年~4.4年の倍増期間の最小個体群 (tmax=7; tm=2; K=0.43-.075).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (31 of 100).