分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins) >
Alestidae (African tetras)
Etymology: Brycinus: Greek, ebrykon, brykomai = to bite, to gnaw (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 大洋性. 热带
Africa: endemic to Lake Turkana, Kenya (Ref. 52331, 53378).
非洲: 特坎那湖的特有种.(参考文献 53378)
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 8.1 cm SL 雄鱼/尚未辨别雌雄; (Ref. 52331)
简单描述
检索表 | 型态特徵 | 形态测量图
It has sharply pointed fang-like teeth and a muzzle-like prognathous snout (Ref. 53378). Pale fawn with silvery scales, darker on the dorsal surface (Ref. 53378). Both lobes of the caudal fin marked with red chromatophores on the lower lobe (Ref. 53378). The dorsal surface is lightly patterned with melanophores in preserved specimens, heavier in a band on the middorsal line (Ref. 53378). Characteristic patches of black pigment are present on the snout, on the lower jaw and on the mid-lateral portion of the caudal peduncle (Ref. 53378). Distal margin of caudal fin with broad edging of black pigment (Ref. 53378).
它有非常尖的尖牙状的齿与一个像鼻口一样的下巴突出的吻。 (参考文献 53378) 灰白的黄褐色有银色的鳞片, 比较深色的在背部表面上.(参考文献 53378) 尾鳍的双叶在下面的叶上有显著的红色色素胞了。 (参考文献 53378) 背部表面轻轻的在保存的标本中有黑色素细胞被式样, 重的在背面中央的在线一条条纹中.(参考文献 53378) 黑色素的特性区块在吻部上出现, 在下颌上与在尾梗的侧面中央部分上.(参考文献 53378) 末梢部边缘尾鳍有黑色素的宽边缘.(参考文献 53378)
Pelagic, restricted to offshore waters; feeds chiefly on prawns, zooplankton and insects with an increasing proportion of small fish in larger individuals; spawns within lake; dominant species in terms of standing stock in Lake Turkana (Ref. 53378).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
非洲: 特坎那湖的特有种.(参考文献 53378)
Hopson, A.J. and J. Hopson, 1982. The fishes of Lake Turkana with a description of three new species: Alestes ferox sp. nov., Alestes minutus sp. nov. (Pisces: Characidae) and Barbus turkanae sp. nov. (Pisces: Cyprinidae). p. 283-347. In A.J. Hopson (ed.) Lake Turkana. A report on the findings of the Lake Turkana project 1972-1975. Overseas Development Administration, London. 1873 p. (Ref. 53378)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01230 (0.00541 - 0.02797), b=2.99 (2.81 - 3.17), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
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): Low vulnerability (10 of 100).
