分類 / 名前
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Characiformes (Characins) >
Serrasalmidae (Piranhas and pacus) > Colossomatinae
Etymology: Mylossoma: Greek, mylo = mill + Greek, soma = body (Ref. 45335).
環境:環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
; 新鮮な水 外洋の. Tropical
South America: Bolivia, Brazil, Colombia, Peru and Venezuela (widespread across the Amazon and Orinoco river basins).
サイズ / 重さ / 年齢
成熟: Lm ?  range ? - ? cm
Max length : 24.2 cm SL オス/雌雄の選別がない; (Ref. 117280)
簡単な記述
検索表 | 形態学 | 形態計測学
脊つい: 36 - 37. This species differs from M. aureum by having the last abdominal spine reaching the anal-fin origin or almost (vs. last abdominal spine clearly separated from anal-fin origin); vertebrae 36-37 (vs. 38-39), and with a distinct black blotch on the opercle (vs. no blotch or faded on the opercle); differs from M. duriventre, M. unimaculatum by having branched anal-fin rays 31, rarely 30-38 (vs. 26-32); differs from M. unimaculatum by having circumpeduncular scales 28-36 (vs. 34-40) and perforated scales 74-99 (vs. 95-110) (Ref. 117280).
Cross section: compressed.
Reported to be an herbivore with tendency for omnivory, feeding on fruits, seeds and larvae of aquatic insects and commonly occurs at whitewater rivers and associated floodplain lakes and channels. Spawning period is reported to be relatively long, with two spawning peaks during the flood season. It is one of the most important species in commercial fisheries in the Brazilian Amazon (Ref. 117280).
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Mateussi, N.T.B., C. Oliveira and C.S. Pavanelli, 2018. Taxonomic revision of the Cis-Andean species of Mylossoma Eigenmann & Kennedy, 1903 (Teleostei: Characiformes: Serrasalmidae). Zootaxa 4387(2):275-309. (Ref. 117280)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
人間の用途
水産業: 高い商業の
用具
特記事項
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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 = 0.5312 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02455 (0.01075 - 0.05606), b=3.00 (2.80 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
栄養段階 (参照
69278): 2.6 ±0.3 se; based on size and trophs of closest relatives
回復力 (参照
120179): 高い, 15か月以下の倍増期間の最小個体群 (Preliminary K or Fecundity.).
漁業の脆弱性 (Ref.
59153): Low vulnerability (20 of 100).
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