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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/).
More on authors: Witte & Kottelat.
Окружающая среда: среда / климатическая зона / пределы глубины / диапазон распространения
экология
; пресноводный донно-пелагический. Tropical; 22°C - 26°C (Ref. 12468)
Asia: Indonesia.
Размер / Вес / Возраст
половая зрелость: Lm ?  range ? - ? cm
Max length : 3.5 cm TL самец/пол неопределен; (Ref. 7050)
Belongs to the Betta coccina complex which is distinguished by having only 9 abdominal vertebrae (vs. 10-11 in all other Betta) and usually a deep red color. Within this complex, Betta persephone is distinguished by its blackish coloration. Betta rutilans shares with Betta tussyae, a modal dorsal ray count of 12 (vs. 10 and 11 in other species of the complex), a modal subdorsal scale count of 9 (vs. 7), a greater length of dorsal base (20-23% SL, vs. 14-19), absence of a midlateral blotch (vs. usually present in male Betta coccina and Betta sp. Witte & Schmidt, submitted) and white pelvic filament (vs. black in Betta coccina). Betta rutilans differs from Betta tussyae by a lower mode in dorsal (I, vs. II) and anal spines (II, vs. III), smaller size (up to 25 mm SL, vs. 48, aquarium specimens), and absence of bluish green spots on proximal areas of unpaired fins (vs. usually present). The single cleared and stained specimens is apparently distinguished from all other Betta by having fused hypurals 6 and 7 (Ref. 26721).
Body shape (shape guide): fusiform / normal.
Facultative air-breathing (Ref. 126274)
Жизненный цикл и брачное поведение
половая зрелость | размножение | нерест | икра | Плодовитость | личинки
Kottelat, M., A.J. Whitten, S.N. Kartikasari and S. Wirjoatmodjo, 1993. Freshwater fishes of Western Indonesia and Sulawesi. Periplus Editions, Hong Kong. 221 p. (Ref. 7050)
Статус Красного Списка МСОП (Ref. 130435: Version 2025-2 (Global))
Угроза для людей
Harmless
Использование человеком
дополнительная информация
инструменты
Специальные отчеты
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Оценки, основанные на моделях
Индекс филогенетического разнообразия (ссылка 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00977 (0.00360 - 0.02649), b=2.97 (2.74 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Трофический уровень (ссылка 69278) |
3.1 ±0.4 se; based on size and trophs of closest relatives |
устойчивость к внешним воздействиям (ссылка 120179) |
высокий, минимальное время удвоения популяции до 15 месяцев (Preliminary K or Fecundity.). |
Уязвимость рыбной ловли (Ref. 59153) |
Low vulnerability (10 of 100). 🛈 |