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Characiformes (Characins) >
Serrasalmidae (Piranhas and pacus) > Serrasalminae
Etymology: Metynnis: Greek, meta = with, after + Greek, ynnis, -eos = ploughshare (Ref. 45335).
More on author: Ahl.
Environment: milieu / climate zone / depth range / distribution range
生態学
; 新鮮な水 外洋の; pH range: 5.0 - 7.0; dH range: ? - 15. Tropical; 24°C - 28°C (Ref. 1672)
South America: Tapajós River basin in Brazil.
サイズ / 重さ / 年齢
Maturity: Lm ?  range ? - ? cm
Max length : 14.0 cm SL オス/雌雄の選別がない; (Ref. 81196); 最大公表体重: 153.00 g (Ref. 125975)
In weedy side arms of the river; popular aquarium fish in the USA according to Ref. 1672, but might be a misidentification of M. hypsauchen. Needs better reference.
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生
Assumed to be like Metynnis hypsauchen.
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)
Human uses
水産業: 少数商業の; 水族館・水槽: 商業
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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=0.02754 (0.01553 - 0.04886), b=3.11 (2.96 - 3.26), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
栄養段階 (Ref.
69278): 3.4 ±0.6 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 高い, 15か月以下の倍増期間の最小個体群 (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).