分類 / 名前
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Anabantiformes (Gouramies, snakeheads) >
Osphronemidae (Gouramies) > Macropodusinae
Etymology: Betta: Malay/Javanese origin. Bleeker (1850, 1858) indicates Ikan Wadder Bettah as the local name of Betta trifasciata Bleeker, 1849 (now Betta picta, Valenciennes, 1846) in the Ambarawa Javanese dialect. Ikan Wader is a common Javanese name for smaller freshwater fishes, especially cyprinids (already used in Old Javanese). See Blust, R. & Trussel, S. Austronesian Comparative Dictionary. Web Edition (https://www.trussel2.com/acd/).
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: 7.1 - 7.6; dH range: 5 - 12. Tropical; 24°C - 28°C (Ref. 1672)
Asia: Malaysia, Singapore and Indonesia.
サイズ / 重さ / 年齢
成熟: Lm ? range ? - ? cm
Max length : 7.0 cm SL オス/雌雄の選別がない; (Ref. 137577)
背面の脊椎 (合計) : 0 - 2; 背鰭 (合計) : 7 - 10; 肛門の骨: 1 - 2; 臀鰭: 24 - 26; 脊つい: 28 - 31. A member of the Betta pugnax species group that can be differentiated from other members by the following combination of characters: presence of chin-bar; absence of dark marks below postorbital stripe on opercle; presence of dorsal transverse bars; caudal transverse bars present only in male; greenish to bluish iridescent scales on opercle and body; red subdistal band and black edge on anal fin; absence of dark edge on caudal fin; anal fin rays 25-28 (mode 26); lateral scales 28-31 (mode 29); postdorsal scales 11-12 (mode 11); pelvic fin length 26.6-43.8% SL; head length 27.5-35.2% SL; inter-orbital width 32.4-53.0% HL (Ref. 56613).
Body shape (shape guide): fusiform / normal.
Facultative air-breathing (Ref. 126274); Occurs in small fast flowing forest streams (Ref. 13061). Inhabits mainly overhanging bank vegetation, submerged leaf litter and exposed roots of bank vegetation (Ref. 13220, 56613). Mouth brooder (Ref. 13061).
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Spawns in a depression on the substrate. Male broods the eggs in his mouth until hatching (Ref. 13061). Produces a minimum of 100 eggs (Ref. 1672).
Tan, H.H. and S.H. Tan, 1996. Redescription of the Malaysian fighting fish Betta pugnax (Teleostei: Belontiidae), and description of Betta pulchra, new species from Peninsular Malaysia. Raffles Bull. Zool. 44(2):419-434. (Ref. 13220)
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: 商業; 水族館・水槽: 商業
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=0.01000 (0.00374 - 0.02675), b=2.97 (2.74 - 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): 3.3 ±0.4 se; based on size and trophs of closest relatives
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 (Produces a minimum of 100 eggs (Ref.
1672)).
漁業の脆弱性 (Ref.
59153): Low vulnerability (10 of 100).
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