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Characiformes (Characins) >
Stevardiidae (Stevardiids) > Diapominae
Etymology: Bryconamericus: Greek, bryko = to bite + America, latinized (Ref. 45335); patriciae: Named in honor to the author's wife, Patricia L. Gonçalves.
環境：環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
; 新鮮な水 底生の漂泳性. Subtropical; 7°C - ?
South America: Rio Uruguay drainage and Laguna dos Patos drainage in Brazil.
サイズ / 重さ / 年齢
成熟: Lm ? range ? - ? cm
Max length : 6.2 cm SL オス/雌雄の選別がない; (Ref. 54750)
簡単な記述
検索表 | 形態学 | 形態計測学
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).
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).
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
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)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
人間の用途
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インターネットの情報源
モデルに基づく推定値
系統多様性指数 (参照
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00851 (0.00355 - 0.02043), b=3.13 (2.95 - 3.31), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
栄養段階 (参照
69278): 2.7 ±0.3 se; based on size and trophs of closest relatives
漁業の脆弱性 (Ref.
59153): Low vulnerability (10 of 100).
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