分類 / 名前
共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
環境:環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
; 新鮮な水 外洋の; pH range: 6.0 - 6.5; dH range: 4 - 18; potamodromous (Ref. 138143). 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).
初回成熟時の長さ / サイズ / 重さ / 年齢
成熟: 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).
Body shape (shape guide): fusiform / normal.
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.
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 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)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
人間の用途
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
モデルに基づく推定値
系統多様性指数 (参照
82804): PD
50 = 0.5078 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00776 (0.00460 - 0.01310), b=3.07 (2.93 - 3.21), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
栄養段階 (参照
69278): 2.9 ±0.37 se; based on food items.
回復力 (参照
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).
漁業の脆弱性 (Ref.
59153): Low to moderate vulnerability (31 of 100).
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栄養素 (Ref.
124155): Calcium = 96.6 [36.9, 226.5] mg/100g; Iron = 1.87 [0.93, 4.50] mg/100g; Protein = 19.1 [17.1, 21.4] %; Omega3 = 0.469 [0.182, 1.290] g/100g; Selenium = 56.3 [23.4, 146.4] μg/100g; VitaminA = 25.4 [9.0, 69.1] μg/100g; Zinc = 1.74 [1.21, 2.54] mg/100g (wet weight);