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> Cyprinodontiformes (Rivulines, killifishes and live bearers) > Anablepidae (Four-eyed fishes, onesided livebearers & white-eye) > Anablepinae
Etymology: onca:From its color pattern, resembling the wild cat Pantera onca; noun in apposition. Eponymy: Reverend Leonard Jenyns (1800–1893) was a clergyman and amateur naturalist. [...] (Ref. 128868), visit book page. More on authors: Lucinda, Reis & Quevedo.
Окружающая среда: среда / климатическая зона / пределы глубины / диапазон распространения экология
South America: tributaries of the lower Rio Uruguai in Brazil and Uruguay.
Размер / Вес / Возраст
половая зрелость: Lm? range ? - ? cm Max length : 8.0 cm TL самец/пол неопределен; (Ref. 59729)
Краткое описание определительные ключи | морфология | морфометрия
членистые (мягкие) лучи спинного плавника (общее число) : 6 - 9; членистые (мягкие) лучи анального плавника: 10; позвонки: 30. Having a large dorsal convex expansion at subdistal segments of right half of sixth anal-fin ray of adult males; distinct ovoid to circular dark spots confined to ventral half of flank posterior to pelvic fins; spots gradually more circular towards midventral line; predorsal scales 13-14; series of dashes or spots on body arranged in 6-8 irregular horizontal lines, consistent midlateral pattern absent; no swelling between the urogenital opening and anterior base of anal fin in females; no distinct dark rounded spot on the dorsal pectoral-fin base (Ref. 42933). Body shape (shape guide): elongated.
Based on photo submitted, this species grow up to 8.0 cm TL and live for up to 7 years in captivity (P. Petersen, pers.comm. 12/2022).
Жизненный цикл и брачное поведение половая зрелость | размножение | нерест | икра | Плодовитость | личинки
Lucinda, P.H.F., R.E. Reis and R. Quevedo, 2002. Jenynsia onca, a new species of anablepid fish (Teleostei: Cyprinodontiformes) from southern Brazil and its phylogenetic position. Ichthyol. Explor. Freshwat. 13(1):33-40. (Ref. 42933)
Статус Красного Списка МСОП (Ref. 130435: Version 2025-2 (Global))
Физиология Состав тела Питательные вещества Потребление кислорода Тип плавания Скорость плавания Зрительные пигменты Звук рыбы Болезни и паразиты Токсичность (LC50s)
