分類 / 名稱
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Teleostei >
Characiformes (Characins) >
Serrasalmidae (Piranhas and pacus) > Serrasalminae
Etymology: Metynnis: Greek, meta = with, after + Greek, ynnis, -eos = ploughshare (Ref. 45335).
More on author: Kner.
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍
生態學
; 淡水 大洋性; pH range: 6.0 - 7.2; dH range: ? - 10. 熱帶; 20°C - 28°C (Ref. 2059)
South America: Amazon and Paraguay River basins.
南美洲: 亞馬遜河與巴拉圭河到阿根廷流域.(參考文獻 9086)
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 18.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 39031)
This fish feeds on fruits and plants, and in extreme conditions or in captivity, may go for fish, crustaceans or maybe meat, but still are not considered dangerous.
持有能引起嚴重的咬的有力的牙齒。
生命週期和交配行為
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
Lays about 150 non-sticky eggs.南美洲: 亞馬遜河與巴拉圭河到阿根廷流域.(參考文獻 9086)
Zarske, A. and J. Géry, 1999. Revision der neotropischen Gattung Metynnis Cope, 1878. 1. Evaluation der Typusexemplare der nominellen Arten (Teleostei: Characiformes: Serrasalmidae). Zool. Abh. Mus. Tierk. Dresden 50(13):169-216. (Ref. 34077)
IUCN 瀕危狀態 (Ref. 130435: Version 2025-2 (Global))
無危 (LC) ; Date assessed: 07 November 2018
人類使用
漁業: 低經濟; 水族館: 商業性
工具
特別的報告
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基於模型的估計
系統發育多樣性指數 (參考文獻
82804): PD
50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01995 (0.01193 - 0.03338), b=3.08 (2.94 - 3.22), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
營養階層 (參考文獻
69278): 2.9 ±0.32 se; based on food items.
回復力 (參考文獻
120179): 高度, 族群倍增時間少於 15個月 (Preliminary K or Fecundity.).
釣魚的脆弱性 (Ref.
59153): Low vulnerability (10 of 100).
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營養素 (Ref.
124155): Calcium = 195 [88, 504] mg/100g; Iron = 2.78 [1.29, 6.88] mg/100g; Protein = 18.6 [16.4, 20.9] %; Omega3 = 0.469 [0.165, 1.385] g/100g; Selenium = 67.9 [23.8, 199.1] μg/100g; VitaminA = 19.2 [5.6, 67.6] μg/100g; Zinc = 2.12 [1.34, 3.31] mg/100g (wet weight); based on
nutrient studies.
