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/); obscura: From the Latin obscurus, meaning indistinct and inconspicuous, referring to the fish in general.
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
Asia: currently known only from Barito basin in Kalimantan Tengah, Indonesia.
サイズ / 重さ / 年齢
成熟: Lm ? range ? - ? cm
Max length : 6.9 cm SL オス/雌雄の選別がない; (Ref. 56613)
簡単な記述
検索表 | 形態学 | 形態計測学
背面の脊椎 (合計) : 0 - 2; 背鰭 (合計) : 8 - 9; 肛門の骨: 2 - 3; 臀鰭: 24 - 27. Opercle with second postorbital stripe. Anal-fin rays 26-29 (mode 28). Subdorsal scales 5 1/2 - 7 (mode 6 1/2). Lateral scales 28-30 (mode 29). Predorsal scales 19-21 (mode 20); postdorsal scales 10-11 (mode 11). Preanal length 46.1-50.7% SL. Head length 30.9-35.4% SL. Length of anal-fin base 51.3-56.4% SL (Ref. 56613 ).
Body shape (shape guide): fusiform / normal.
Facultative air-breathing (Ref. 126274)
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Tan, H.H. and P.K.L. Ng, 2005. The fighting fishes (Teleostei: Osphronemidae: Genus Betta) of Singapore, Malaysia and Brunei. Raffles Bull. Zool. Supplement (13):43-99. (Ref. 56613)
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
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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): 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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