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).
Environment: milieu / climate zone / depth range / distribution range
生态学
; 淡水 底中水层性; 深度上下限 0 - 2 m (Ref. 52417). 亚热带的
South America: Rio Iguazú basin, Argentina.
南美洲: rio Iguazu 流域，阿根廷。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 6.8 cm SL 雄鱼/尚未辨别雌雄; (Ref. 111771); 最大体重: 6.70 g (Ref. 111771)
简单描述
检索表 | 型态特徵 | 形态测量图
Differs from all congeneric species by the combination of the following characters: premaxilla with 4-6 teeth on the outer row, teeth aligned and tricuspidate or tetracuspidate, maxillary teeth 3-4 and usually pentacuspidate, 18-21 branched anal-fin rays, lateral line with 36-38 perforated scales, a short peduncle (11.6-13.3% SL), a ventrally elongated black humeral spot, a very faint second humeral spot and a narrow black lateral band (Ref. 52417).
有别于所有的同属种藉由下列特征的组合: 前颌骨有 4-6 个牙齿在外部的列, 齿排列与三尖的或者 tetracuspidate, 上颚齿 3-4 与通常 pentacuspidate, 18-21个分枝的臀鳍棘条, 侧线有 36-38个有排孔的鳞片，一个短的梗 (11.6-13.3% SL) ，一个腹瘦长黑色的肩部斑点，一个非常模糊的第二个肩部的斑点与一个狭窄的黑色侧面的条纹.(参考文献 52417)
Collection sites have rapids with clear flowing water, pools and some areas of slow current. Bottom substrate includes mud, sand and mostly stones. Water depth ranges from 0.40-2m and temperate of the water near surface during summer is about 26° C (Ref. 52417).
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
南美洲: rio Iguazu 流域，阿根廷。
Casciotta, J.R., A.E. Almiron and M.D.L.M. Azpelicueta, 2004. Bryconamericus ikaa, a new species from tributaries of the río Iguazú in Argentina (Characiformes, Characidae). Ichthyol. Explor. Freshwat. 15(1):61-66. (Ref. 52417)
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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).
