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Oryzias latipes(Hamamatsu,Shizuoka,Japan,2007)-1.jpg
Japanese rice fish (O. latipes)
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Beloniformes
Family: Adrianichthyidae
Genus: Oryzias
D. S. Jordan & Snyder, 1906
Type species
Oryzias latipes
(Temminck & Schlegel, 1846)

Oryzias is a genus of ricefishes native to fresh and brackish water in east and south Asia.[1] Some species are widespread and the Japanese rice fish (O. latipes) is commonly used in science as a model organism, while others have very small ranges and are threatened.[1] They are small, up to 8 cm (3.1 in) long, and most are relatively plain in colour.[2]

The genus name Oryzias is a reference to the scientific name for rice, Oryza.[1]

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.[1][3]


There are currently 33 recognized species in this genus:[2]


  1. ^ a b c d e Parenti, L.R. (2008). "A phylogenetic analysis and taxonomic revision of ricefishes, Oryzias and relatives (Beloniformes, Adrianichthyidae)". Zoological Journal of the Linnean Society. 154: 494–610. doi:10.1111/j.1096-3642.2008.00417.x. 
  2. ^ a b Froese, Rainer, and Daniel Pauly, eds. (2017). Species of Oryzias in FishBase. February 2017 version.
  3. ^ a b Herder, F.; Hadiaty, R. K.; Nolte, A. W. (2012). "Pelvic-fin brooding in a new species of riverine ricefish (Atherinomorpha: Beloniformes: Adrianichthyidae) from Tana Toraja, Central Sulawesi, Indonesia". The Raffles Bulletin of Zoology. 60 (2): 467–476. 
  4. ^ a b Parenti, L.R.; Hadiaty, R.K.; Lumbantobing, D.; Herder, F. (2013). "Two New Ricefishes of the Genus Oryzias (Atherinomorpha: Beloniformes: Adrianichthyidae) Augment the Endemic Freshwater Fish Fauna of Southeastern Sulawesi, Indonesia". Copeia. 2013 (3): 403–414. doi:10.1643/ci-12-114. 
  5. ^ Herder, F. & Chapuis, S. (2010). "Oryzias hadiatyae, a new species of ricefish (Atherinomorpha: Beloniformes: Adrianichthyidae) endemic to Lake Masapi, Central Sulawesi, Indonesia" (PDF). The Raffles Bulletin of Zoology. 58: 269–280. 
  6. ^ Uwa, H. & Magtoon, W. (1986). "Description and karyotype of a new ricefish, Oryzias mekongensis, from Thailand". Copeia. 51: 473–478. doi:10.2307/1445005. JSTOR 1445005. 
  7. ^ Parenti, L. R. & B. Soeroto. (2004). "Adrianichthys roseni and Oryzias nebulosus, two new ricefishes (Atherinomorpha: Beloniformes: Adrianichthyidae) from Lake Poso, Sulawesi, Indonesia". Ichthyological Research. 51: 10–19. doi:10.1007/s10228-003-0187-1. 
  8. ^ Mokodongan, D.F.; Tanaka, R.; Yamahira, K. (2014). "A New Ricefish of the Genus Oryzias (Beloniformes, Adrianichthyidae) from Lake Tiu, Central Sulawesi, Indonesia". Copeia. 2014 (3): 561–567. doi:10.1643/ci-13-081.