分类 / Names
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Teleostei >
Characiformes (Characins) >
Characidae (Characins; tetras) > Stevardiinae
Etymology: Hemibrycon: Greek, hemi = half + Greek, bryko = to bite (Ref. 45335).
More on author: Eigenmann.
Issue
No recent work, see Eigenmann, 1927:406, for description and key of the species.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性. 熱帶
South America: Amazon River basin and the Urubamba, Comberciato, and Crisnejas rivers in Peru.
南美洲: 在祕魯的亞馬遜河流域與 Urubamba ， Comberciato 與 Crisnejas 河。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 10.0 cm SL 雄鱼/尚未辨别雌雄; (Ref. 38376)
简单描述
检索表 | 型态特徵 | 形态测量图
背的软条 (总数) : 8; 臀鳍软条: 19 - 23; 脊椎骨: 41 - 43. This species is distinguished from its congeners, except H. jelskii, by the size of humeral spot over 7-8 horizontal series of scales (vs. 3-6). H. helleri differs from H. jelskii by the number of branched anal-fin rays (19-23 vs. 25-30), and number of scales along anal-fin base scale sheath (6-12 vs. 13-28). It is rather similar to H. inambari, but can be distinguished by the size of humeral spot (over 7-8 vs. 5-6 horizontal series of scales), number of predorsal scales (16-18 vs. 13-16), and by the total number of vertebrae (41-43 vs. 39-40) (Ref. 85819).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
南美洲: 在祕魯的亞馬遜河流域與 Urubamba ， Comberciato 與 Crisnejas 河。
Bertaco, V.A. and L.R. Malabarba, 2010. A review of the Cis-Andean species of Hemibrycon Günther (Teleostei: Characiformes: Characidae: Stevardiinae), with description of two new species. Neotrop. Ichthyol. 8(4):737-770. (Ref. 85819)
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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=0.00813 (0.00372 - 0.01775), b=3.09 (2.90 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 3.0 ±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).
