分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins) >
Characidae (Characins; tetras) > Stevardiinae
Etymology: Bryconamericus: Greek, bryko = to bite + America, latinized (Ref. 45335); ecai: From the Tupi-Guarani eçai, meaning small eye, in allusion to the smaller eye diameter in comparison to other Bryconamericus species..
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性. 亚热带的
South America: Laguna dos Patos drainage in Rio Grande do Sul, Brazil.
南美洲: 小湖在巴西的南里约格朗德做 Patos 流域。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 7.5 cm SL 雄鱼/尚未辨别雌雄; (Ref. 54750)
简单描述
检索表 | 型态特徵 | 形态测量图
Distinguished from other species of Bryconamericus by the combination of the following characters: body depth 33.1-36.9% SL, mean 34.9; eye diameter 31.1-33.9% HL, mean 32.3; snout length 26.8-32.4% HL, mean 29.6; branched anal-fin rays 15-18; teeth of inner row of premaxilla tricuspid or pentacuspid; teeth compressed distally; and males with bony hooks on pelvic and anal fins (Ref. 54750).
与其他种的 Bryconamericus 区分了藉由下列特征的组合: 体高 33.1-36.9% SL, 意谓 34.9; 眼直径 31.1-33.9% HL, 意谓 32.3; 吻的长度 26.8-32.4% HL, 意谓 29.6; 分枝的臀鳍棘条 15-18; 前颌骨三尖瓣或 pentacuspid 的内部列的齿; 齿扁长形的末梢部地; 而且在腹鳍与臀鳍上雄性有多骨的钩.(参考文献 54750)
描述: 背鳍鳍条 ii,8. 臀鳍棘条 iii-iv,15-18. 胸鳍鳍条 i ， 10-12. 腹鰭鰭條 i ， 6-7.(參考文獻 54750)
Occurs in a creek with clear to turbid water, light to moderate water current and bottom with stones and sand (Ref. 54750).
用清澈至混浊的水, 淡色到中等的水流出现于一条小溪而且用石头与沙子出现于底部。 (参考文献 54750)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
南美洲: 小湖在巴西的南里约格朗德做 Patos 流域。
da Silva, J.F.P., 2004. Two new species of Bryconamericus Eigenmann (Characiformes: Characidae) from southern Brazil. Neotrop. Ichthyol. 2(2):55-60. (Ref. 54750)
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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=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
营养阶层 (Ref.
69278): 2.6 ±0.3 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).
