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); patriciae: Named in honor to the author's wife, Patricia L. Gonçalves.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性. 亚热带的; 7°C - ?
South America: Rio Uruguay drainage and Laguna dos Patos drainage in Brazil.
南美洲: Rio 乌拉圭流域与小湖在巴西做 Patos 流域。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 6.2 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 from southern South America by the combination of the following characters: body depth 25.5-30.3% SL, mean 28.0; head length 25.2-27.6% SL, mean 26.3; pelvic fin length 11.0-14.4% SL, mean 12.5; branched anal-fin rays 14-18; teeth of outer row of premaxilla regularly implanted; teeth of inner row of premaxilla pentacuspid; teeth compressed distally; and males with bony hooks on pelvic and anal fins (Ref. 54750).
与来自南美洲南部的其他种的 Bryconamericus 区分了藉由下列特征的组合: 体高 25.5-30.3% SL, 意谓 28.0; 头长 25.2-27.6% SL, 意谓 26.3; 腹鳍长度 11.0-14.4% SL, 意谓 12.5; 分枝的臀鳍棘条 14-18; 前颌骨的外部列的齿经常地深植; 前颌骨 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,14-18.(iii,17) 胸鰭鰭條 i ， 10-12.(i,10) 腹鰭鰭條 ii ， 6-7(i,6).(參考文獻 54750)
Inhabits rivers and creeks with clear water, light to strong water current and bottom formed by rocks, stones and in some points gravel and sand (Ref. 54750). Usually occurs in pools below the rapids (Ref. 54750).
栖息于河与小溪，水质清澈的地方, 淡色到强的水流与底部由岩石，石头形成了与在一些点砾石与沙子中.(参考文献 54750) 通常在急流之下出现于水池中。 (参考文献 54750)
Life cycle and mating behavior
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 仔鱼
南美洲: Rio 乌拉圭流域与小湖在巴西做 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)
世界自然保护联盟红皮书 (Ref. 130435: Version 2024-2)
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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=0.00955 (0.00407 - 0.02241), b=3.09 (2.91 - 3.27), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 2.7 ±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).
