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Beloniformes (Needle fishes) >
Adrianichthyidae (Ricefishes) > Oryziinae
Etymology: Oryzias: Greek, oryza = rice; because of the habitat used by this fish (Ref. 45335); nigrimas: Latin, niger = black + Latin, mas = male. An allusion to the dark nuptial coloration of males (Ref. 26747).
More on author: Kottelat.
Environment: milieu / climate zone / depth range / distribution range
Ecologia
; Água doce bentopelágico; pH range: 7.5 - 8.5; dH range: ? - 18; não migratória. Tropical; 22°C - 25°C (Ref. 31267); 1°S - 3°S, 120°W - 121°W (Ref. 26747)
Asia: Endemic to Lake Poso, Sulawesi, Indonesia.
Tamanho / Peso / Idade
Maturity: Lm ? range ? - ? cm
Max length : 4.7 cm SL macho/indeterminado; (Ref. 26747)
Raios dorsais moles (total) : 8 - 11; Raios anais moles: 21 - 25. Distinguished from all other species of Oryzias by the unique black nuptial coloration of the adults males. Differs further by having slightly emarginate caudal fin (shared only with O. matanensis which has 40-47 scales in lateral row and O. orthognathus which has 45-54 scales in lateral row), 34-37 scales in lateral row, 8-11 dorsal rays and 21-25 anal rays (Ref. 26747).
Non-annual breeder. Is difficult to maintain in aquarium (Ref. 27139).
Life cycle and mating behavior
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
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)
Categoria na Lista Vermelha da IUCN (Ref. 130435: Version 2024-1)
Ameaça para o homem
Harmless
Utilização humana
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