分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | 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.
Environment: milieu / climate zone / depth range / distribution range
生态学
; 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流域。
大小 / 重量 / 年龄
Maturity: Lm ?  range ? - ? cm
Max length : 18.0 cm TL 雄鱼/尚未辨别雌雄; (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.
持有能引起严重的咬的有力的牙齿。
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
Lays about 150 non-sticky eggs.南美洲: 亞馬遜河與巴拉圭河流域。
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)
人类利用
渔业: 低经济; 水族馆: 商业性
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5001 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01995 (0.01187 - 0.03353), b=3.08 (2.94 - 3.22), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
营养阶层 (Ref.
69278): 2.9 ±0.32 se; based on food items.
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).
Nutrients (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.