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Characiformes (Characins) >
Alestidae (African tetras)
Etymology: Micralestes: Greek, mikros = small + Greek,lestes = thief (Ref. 45335); schelly: Named after the collector of the type series, Robert C. Schelly (Ref. 59215).
Eponymy: Dr Robert C Schelly is an American ichthyologist researching at the AMNH. [...] (Ref. 128868), visit book page.
Окружающая среда: среда / климатическая зона / пределы глубины / диапазон распространения
экология
; пресноводный пелагический. Tropical
Africa: only known from the type locality on the lower Congo River near Inga, in Democratic Republic of the Congo (Ref. 59215).
Размер / Вес / Возраст
половая зрелость: Lm ?  range ? - ? cm
Max length : 4.9 cm SL самец/пол неопределен; (Ref. 59215)
Краткое описание
определительные ключи | морфология | морфометрия
колючие лучи спинного плавника (общее число) : 0; членистые (мягкие) лучи спинного плавника (общее число) : 8 - 9; колючие лучи анального плавника: 0; членистые (мягкие) лучи анального плавника: 19 - 20; позвонки: 38 - 40. It is characterized by the combination of the absence of a supraorbital bone, and the presence of a deep-lying midlateral stripe extending along the body onto the caudal peduncle, a band of chromatophores above the anal fin, and a small pair of inner row symphyseal teeth on the dentary (Ref. 59215). It has also an elevated vertebral count of 38 to 40, and 4 to 6 outer row premaxillary teeth are present with a majority of the specimens, with only 4 outer row teeth implanted in an alternating pattern with respect to the anterior inner row premaxillary teeth (Ref. 59215). Number of dorsal fin rays is ii,6-7 and anal fin rays is iii,16-17 (Ref. 59215). In life a broad, blue-green iridescent midlateral band covers the lateral flanks and tail from behind the opercle to the base of the caudal fin; this band overlies and obscures the deep lying midlateral stripe evident in preserved specimens; above and below the midlateral band the body is silvery white (Ref. 59215). Numerous melanophores are present on the head and opercle, and scattered over the body with a concentration around lateral scale margins (Ref. 59215). Dorsal fin and pectoral fins are dusky gray; adipose fin is pale grey with a dark distal margin; caudal fin is dusky gray and medially each fin fork is deep crimson red; anterior and distal margins of anal fin are white, while the remainder of the fin is jet black; pelvic fins are white (Ref. 59215).
Body shape (shape guide): fusiform / normal.
Micralestes schelly was collected over a sand and gravel substrate in the main channel of the Congo River amongst large rock slabs of up to 4 m high thrusting upward at angles of 60-70 degrees, in pools up to 2 m in depth (Ref. 59215).
Жизненный цикл и брачное поведение
половая зрелость | размножение | нерест | икра | Плодовитость | личинки
Stiassny, M.L.J. and V. Mamonekene, 2007. Micralestes (Characiformes, Alestidae) of the lower Congo River, with a description of a new species endemic to the lower Congo River rapids in the Democratic Republic of Congo. Zootaxa 1614:17-29. (Ref. 59215)
Статус Красного Списка МСОП (Ref. 130435: Version 2025-2 (Global))
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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=0.01072 (0.00489 - 0.02350), b=3.02 (2.84 - 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). 🛈 |