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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/); siamorientalis: Derived from Siam, the former name of Thailand, and orientalis, a Latin version for east, the region of the country where the fish is located.
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: Thailand and Cambodia.
サイズ / 重さ / 年齢
成熟: Lm ? range ? - ? cm
Max length : 3.6 cm SL オス/雌雄の選別がない; (Ref. 93122)
簡単な記述
検索表 | 形態学 | 形態計測学
背面の脊椎 (合計) : 1 - 2; 背鰭 (合計) : 7 - 11; 肛門の骨: 3 - 5; 臀鰭: 21 - 25. Can be diagnosed from other members of the Betta splendens group by having the following combination of characters: dark-brown to black body; black opercle with two parallel reddish vertical bars; red patches on dark brown to black opercular membrane; caudal fin rays with distal red crescent and thin black edge; no dark transverse bars on caudal fin; distal half of posterior anal fin rays red with a small red patch at distal tip; black and red from proximal pelvic fin base to the white tip (Ref. 93122).
Body shape (shape guide): fusiform / normal.
Facultative air-breathing (Ref. 126274); Inhabits shallow freshwater marshes, grass fields, and paddy fields. Found at the water edge (with dense vegetation) of ponds, lagoons, ditches, canals, and others water ways. Occurs in still waters and uses water plants as shelter to set up safe territory for building the bubble-nest, courtship, and hatching of fry. Cohabits with Trichopsis vittata, Trichopsis schalleri, Trichopsis pumila, Trichopodus trichopterus, Anabas testudineus, Lepidocephalichthys hasselti, Pangio anguillaris , Macrognathus siamensis, and Monopterus albus (Ref. 93122).
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Kowasupat, C., B. Panijpan, P. Ruenwongsa and T. Jeenthong, 2012. Betta siamorientalis, a new species of bubble-nest building fighting fish (Teleostei: Osphronemidae) from eastern Thailand. Vertebrate Zoology 62(3):387-397. (Ref. 93122)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
人間の用途
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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): 3.1 ±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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