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Characiformes (Characins) >
Acestrorhamphidae (American tetras) > Hyphessobryconinae
Etymology: Hyphessobrycon: Greek, hyphesson, -on, -on = a little smaller + Greek, bryko = to bite (Ref. 45335).
More on author: Ahl.
Taxonomic Remarks
See Géry (1980) for a redescription, and Burt et al. (1988) for comments on the reproduction.
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; pH range: 5.5 - 8.0; dH range: ? - 25. Tropical; 23°C - 28°C (Ref. 1672)
South America: Tapajós River basin.
サイズ / 重さ / 年齢
成熟: Lm ?  range ? - ? cm
Max length : 3.8 cm SL オス/雌雄の選別がない; (Ref. 40342); 3.6 cm SL (female); 最大公表体重: 1.36 g (Ref. 40342); 最大公表体重: 1.36 g
Feeds on worms, crustaceans and plant matter (Ref. 7020). Aquarium keeping: in groups of 5 or more individuals; minimum aquarium size 60 cm (Ref. 51539).
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Based on aquarium observations, males defend territories during the morning spawning period while females school, periodically entering a male's territory individually to spawn (Ref. 40342). After a brief courtship, there is a short spawning rush near some suitable substrate such as clumps of aquatic plants (Ref. 40342). There is no parental care, males leaving their territory after the spawning period to school with the females (Ref. 40342).
Produces many batches of eggs per season and releases each of these batches over many spawning acts (Ref. 40342). Aquarium observations suggest that this species reproduces continuously after reaching maturity (Ref. 40342).
Burt, A., D.L. Kramer, K. Nakatsuru and C. Spry, 1988. The tempo of reproduction in Hyphessobrycon pulchripinnis (Characidae), with a discussion on the biology of 'multiple spawning' in fishes. Environ. Biol. Fishes 22(1):15-27. (Ref. 40342)
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; 水族館・水槽: 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 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01047 (0.00518 - 0.02117), b=3.05 (2.87 - 3.23), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
栄養段階 (参照
69278): 2.9 ±0.31 se; based on food items.
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 (10 of 100).
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