Oryzias
Oryzias is a genus of ricefishes native to fresh and brackish water in east and south Asia. Some species are widespread and the Japanese rice fish is commonly used in science as a model organism, while others have very small ranges and are threatened. They are small, up to long, and most are relatively plain in colour.
The genus name Oryzias is a reference to the scientific name for rice, Oryza.
They have an unusual reproductive behavior where the female facultatively carries the eggs in a cluster at the pelvic or anal fins for a period after they have been fertilized.
Species
These are the currently recognized species in this genus:Oryzias asinua Parenti, Hadiaty, Lumbantobing & Herder, 2013Oryzias bonneorum Parenti, 2008Oryzias carnaticus Jerdon, 1849Oryzias celebensis Max [Carl Wilhelm Weber|Weber], 1894 Oryzias curvinotus Nichols & Pope, 1927Oryzias dancena Hamilton, 1822Oryzias dopingdopingensis Mandagi, Mokodongan, Tanaka & Yamahira, 2018Oryzias eversi Herder, Hadiaty & Nolte, 2012Oryzias hadiatyae Herder & Chapuis, 2010 Oryzias haugiangensis Roberts, 1998Oryzias hubbsi Roberts, 1998Oryzias javanicus Bleeker, 1854 Oryzias kalimpaaensis Gani, Suhendra, Herder, Schwarzer, Möhring, Montenegro, Herjayanto & Mokodongan, 2022Oryzias landangiensis Utama, Mandagi, Lawelle, Masengi, Watanabe, Sawada, Nagano, Kusumi & Yamahira, 2022Oryzias latipes Coenraad [Jacob Temminck|Temminck] & Schlegel, 1846 Oryzias loxolepis Kobayashi, Mokodongan, Horoiwa, Fujimoto, Tanaka, Masengi & Yamahira, 2023Oryzias luzonensis Herre & Ablan, 1934Oryzias marmoratus Aurich, 1935 Oryzias matanensis Aurich, 1935 Oryzias mekongensis Uwa & Magtoon, 1986Oryzias melastigma McClelland (doctor)|McClelland], 1839Oryzias minutillus Hugh [McCormick Smith|Smith], 1945 Oryzias moramoensis Utama, Mokodongan, Lawelle, Masengi & Yamahira, 2024Oryzias nebulosus Parenti & Soeroto, 2004Oryzias nigrimas Kottelat, 1990 Oryzias orthognathus Kottelat, 1990 Oryzias pectoralis Roberts, 1998Oryzias polylepis Möhring, Mokodongan, Gani, Wowor, Annawaty, Böhne & Herder, 2025Oryzias profundicola Kottelat, 1990 Oryzias sakaizumii Asai, Senou & Hosoya, 2012 Oryzias sarasinorum Canna [Maria Louise Popta|Popta], 1905 Oryzias setnai Kulkarni, 1940 Oryzias sinensis Chen, Uwa & Chu, 1989Oryzias soerotoi Mokodongan, Tanaka & Yamahira, 2014Oryzias songkhramensis Magtoon, 2010Oryzias timorensis Weber & Lieven [Ferdinand de Beaufort|de Beaufort], 1922Oryzias uwai Roberts, 1998Oryzias wolasi Parenti, Hadiaty, Lumbantobing & Herder, 2013Oryzias woworae Parenti & Hadiaty, 2010