分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins)
脂鯉目 (Characins) >
Alestidae (African tetras)
Alestidae (African tetras)
Etymology: Alestes: Greek, alestes, -oy = miller (Ref. 45335).
More on author: Linnaeus.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 大洋性; pH range: 6.0 - 6.5; dH range: 4 - 18; 河川洄游 (Ref. 51243). 熱帶; 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).
非洲: 查德，尼日，佛塔河，甘比亞，塞內加爾，尼羅河，湖 Mobutu Sese Seko ，湖 Omo ，特坎那湖。 也已知來自白色的尼羅河， Murchinson 尼羅河與藍色的尼羅河,.(參考文獻 5331)
Length at first maturity / 大小 / 重量 / 年齡
Maturity: Lm ?, range 22 - ? cm
Max length : 55.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 2880); 最大體重: 600.00 g (Ref. 3799); 最大年齡: 7 年 (Ref. 2758)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
臀棘: 0; 臀鰭軟條: 21 - 26; 脊椎骨: 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).
銀色的顏色, 背面深灰色或藍色的, 腹面分開微白色的。 鰭淺灰色的或些微地帶有了黃色的橘色。 尾鰭下葉紅色。 發展良好的囟門。 對於 Alestes 種的性的同種二形為 A. baremoze 見附加的特徵。
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.
二個亞種: 在尼羅河的 Alestes dentex dentex 與非洲西部的蘇丹流域的 Alestes dentex sethente(Valenciennes,1849)。 雜食性, 腹部檢查後發現有種子，浮游動物，昆蟲或魚苗了。 (參考文獻 28714)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Up to 300 eggs are scattered on the bottom. Larvae hatch after about 6 days.非洲: 查德，尼日，佛塔河，甘比亞，塞內加爾，尼羅河，湖 Mobutu Sese Seko ，湖 Omo ，特坎那湖。 也已知來自白色的尼羅河， Murchinson 尼羅河與藍色的尼羅河,.(參考文獻 5331)
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 瀕危狀態 (Ref. 130435: Version 2024-1)
無危 (LC) ; Date assessed: 17 June 2019
人類使用
漁業: 商業性
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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=0.00776 (0.00454 - 0.01328), b=3.07 (2.93 - 3.21), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
營養階層 (Ref.
69278): 2.9 ±0.37 se; based on food items.
回復力 (Ref.
120179): 中等的, 族群倍增時間最少 1.4 - 4.4年 (tmax=7; tm=2; K=0.43-.075).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (31 of 100).
Nutrients (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);
