分類 / 名前
共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
Taxonomic Remarks
Specimens mentioned by Valenciennes in Cuvier & Valenciennes (1850: 211) and Bertin (1948: 26) are not types, only historical, all collected after original description by Cuvier (1818). See Boujard, Sabatier, Rojas-Beltran, Prevost & Renno (1990) for details on foods habits. See Lecomte, Boujard, Meunier, Renno and Rojas Beltarn (1993) for details on growth biology. Synonymy above is based on personal observation and examination of types.
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. Tropical
South America: Amazon River basin, north and east Guiana Shield rivers.
サイズ / 重さ / 年齢
成熟: Lm ? range ? - ? cm
Max length : 40.7 cm TL オス/雌雄の選別がない; (Ref. 111518); 最大公表体重: 5.0 kg (Ref. ); 最大公表体重: 5.0 kg
Occurs along the calm banks of main rivers and also near the rapids. During the rainy season when growth is maximal, it feeds on fruits and consumes the seeds of palm trees like Euterpa oleracea, Taralea oppositifolia, Mauritia flexuosa and other plants like Inga sp. and Psidium sp. which they crush with their strong jaws. During the dry season, their diet consists more of aquatic plants like Mourea fluviatilis and Apinagia richardiana and gastropods and fish (Ref. 12225). Its flesh is excellent but it is preferable not to consume it at the end of the rainy season because then its flesh is very high in fat (Ref. 27188).
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Distinct pairing during copulation (Ref. 205).
Planquette, P., P. Keith and P.-Y. Le Bail, 1996. Atlas des poissons d'eau douce de Guyane. Tome 1. Collection du Patrimoine Naturel Volume 22, MNHN, Paris & INRA, Paris. 429 p. (Ref. 12225)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
人間の用途
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 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02089 (0.01152 - 0.03791), b=2.97 (2.81 - 3.13), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
栄養段階 (参照
69278): 2.6 ±0.23 se; based on food items.
Generation time: 2.5 ( na - na) years. Estimated as median ln(3)/K based on 2
growth studies.
回復力 (参照
120179): 手段, １．４年～４．４年の倍増期間の最小個体群 (tmax=5; k=0.44).
漁業の脆弱性 (Ref.
59153): Low to moderate vulnerability (31 of 100).
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