Environment: milieu / climate zone / depth range / distribution range
экология
; пресноводный; солоноватоводный донно-пелагический; амфидромный (Ref. 57749). Tropical
Southwestern Indian Ocean: Réunion, Mauritius, Rodrigues, Comores, Madagascar.
Size / Вес / Возраст
Maturity: Lm ? range ? - ? cm
Max length : 25.0 cm SL самец/пол неопределен; (Ref. 57749)
Краткое описание
морфология | морфометрия
колючие лучи спинного плавника (общее число): 7; членистые (мягкие) лучи спинного плавника (общее число): 10-11; колючие лучи анального плавника 1; членистые (мягкие) лучи анального плавника: 9 - 10. Large head. Fusiform body. Large and terminal mouth. Two dorsal fins. First with 6 spines, second with 1 spine and 10 to 11 branched rays. Adults body and fins usually grey to black with a clearer belly. Juveniles brown with a serie of darker rounded marks along the flanks. First dorsal usually shows a black mark in its posterior part, especially for young specimens. Fading while fish age. 10 to 25cm (Ref. 57749).
This species occurs in freshwaters and sometimes brackish waters in slow to fast current waters to the base of the first falls. Usually occurs in clear waters with sand, gravel or rock bottom. Feeds on algae, detritus, worms, gastropods and crustaceans. Close biology to A. guamensis. Amphidromous species. Adults migrate to the mouth of the rivers for reproduction. Females spawn on the rocks' surface where the males fecund the eggs. Males protect the eggs until they hatch (incubation lasts 24 to 70hrs). Larvae, translucid, are then carried into estuaries or sea. They come back after they spent 150 to 165 days in seawaters (Ref. 57749). Also Ref. 4343.
Life cycle and mating behavior
половая зрелость | размножение | нерест | икра | Fecundity | личинки
Keith, P., G. Marquet, P. Valade, P. Bosc and E. Vigneux, 2006. Atlas des poissons et des crustacés d'eau douce des Comores, Mascareignes et Seychelles. Muséum national d’Histoire naturelle, Paris. Patrimoines naturels, 65:250p. (Ref. 57749)
Статус Красного Списка МСОП (Ref. 130435)
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