Biology:Oryzias

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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 (optionally) carries the eggs in a cluster at the pelvic or anal fins for a period after they have been fertilized.[1][3]

Species

Oryzias mekongensis
Oryzias nigrimas
Oryzias sarasinorum
Oryzias woworae

These are the currently recognized species in this genus:[2]

  • Oryzias asinua Parenti, Hadiaty, Lumbantobing & Herder, 2013[4]
  • Oryzias bonneorum Parenti, 2008[1]
  • Oryzias carnaticus Jerdon, 1849
  • Oryzias celebensis Weber, 1894 (Celebes medaka)
  • Oryzias curvinotus Nichols & Pope, 1927
  • Oryzias dancena Hamilton, 1822
  • Oryzias dopingdopingensis Mandagi, Mokodongan, Tanaka & Yamahira, 2018[5]
  • Oryzias eversi Herder, Hadiaty & Nolte, 2012[3]
  • Oryzias hadiatyae Herder & Chapuis, 2010 (Renny's ricefish)[6]
  • Oryzias haugiangensis Roberts, 1998
  • Oryzias hubbsi Roberts, 1998
  • Oryzias javanicus Bleeker, 1854 (Javanese ricefish)
  • Oryzias kalimpaaensis Gani, Suhendra, Herder, Schwarzer, Möhring, Montenegro, Herjayanto & Mokodongan, 2022[7]
  • Oryzias landangiensis Utama, Mandagi, Lawelle, Masengi, Watanabe, Sawada, Nagano, Kusumi & Yamahira, 2022[8]
  • Oryzias latipes Temminck & Schlegel, 1846 (Japanese ricefish)
  • Oryzias loxolepis Kobayashi, Mokodongan, Horoiwa, Fujimoto, Tanaka, Masengi & Yamahira, 2023[9]
  • Oryzias luzonensis Herre & Ablan, 1934
  • Oryzias marmoratus Aurich, 1935 (Marmorated medaka)
  • Oryzias matanensis Aurich, 1935 (Matano medaka)
  • Oryzias mekongensis Uwa & Magtoon, 1986[10]
  • Oryzias melastigma McClelland, 1839
  • Oryzias minutillus Smith, 1945 (Dwarf medaka)
  • Oryzias moramoensis Utama, Mokodongan, Lawelle, Masengi & Yamahira, 2024[11]
  • Oryzias nebulosus Parenti & Soeroto, 2004[12]
  • Oryzias nigrimas Kottelat, 1990 (black buntingi)
  • Oryzias orthognathus Kottelat, 1990 (Sharp-jawed buntingi)
  • Oryzias pectoralis Roberts, 1998
  • Oryzias polylepis Möhring, Mokodongan, Gani, Wowor, Annawaty, Böhne & Herder, 2025[13]
  • Oryzias profundicola Kottelat, 1990 (Yellow finned medaka)
  • Oryzias sakaizumii Asai, Senou & Hosoya, 2012 (Northern medaka)
  • Oryzias sarasinorum Popta, 1905 (Sarasins minnow)
  • Oryzias setnai Kulkarni, 1940 (Malabar ricefish)
  • Oryzias sinensis Chen, Uwa & Chu, 1989
  • Oryzias soerotoi Mokodongan, Tanaka & Yamahira, 2014[14]
  • Oryzias songkhramensis Magtoon, 2010
  • Oryzias timorensis Weber & de Beaufort, 1922
  • Oryzias uwai Roberts, 1998
  • Oryzias wolasi Parenti, Hadiaty, Lumbantobing & Herder, 2013[4]
  • Oryzias woworae Parenti & Hadiaty, 2010

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 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. ↑ 2.0 2.1 Froese, Rainer and Pauly, Daniel, eds. (2017). Species of Oryzias in FishBase. February 2017 version.
  3. ↑ 3.0 3.1 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. ↑ 4.0 4.1 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. ↑ Mandagi, I.F.; Mokodongan, D.F.; Tanaka, R.; Yamahira, K. (2018). "A New Riverine Ricefish of the Genus Oryzias (Beloniformes, Adrianichthyidae) from Malili, Central Sulawesi, Indonesia". Copeia 2018 (106): 297–304. doi:10.1643/CI-17-704. 
  6. ↑ Herder, F.; Chapuis, S. (2010). "Oryzias hadiatyae, a new species of ricefish (Atherinomorpha: Beloniformes: Adrianichthyidae) endemic to Lake Masapi, Central Sulawesi, Indonesia". The Raffles Bulletin of Zoology 58: 269–280. http://rmbr.nus.edu.sg/rbz/biblio/58/58rbz269-280.pdf. Retrieved 2011-07-20. 
  7. ↑ Gani, A.; Suhendra, S.; Herder, F.; Schwarzer, J.; Möhring, J.; Montenegro, J.; Herjayanto, M.; Mokodongan, D. F. (2022). "A New Endemic Species of Pelvic-brooding Ricefish (Beloniformes: Adrianichthyidae: Oryzias) from Lake Kalimpa’a, Sulawesi, Indonesia". Bonn Zoological Bulletin 71 (1): 77-85. doi:10.20363/bzb-2022.71.1.077. 
  8. ↑ Utama, I.V.; Mandagi, I.F.; Lawelle, S.A.; Masengi, K.W.A.; Watanabe, K.; Sawada, N.; Nagano, A.J.; Kusumi, J. et al. (2022). "Deeply divergent freshwater fish species within a single river system in central Sulawesi". Molecular Phylogenetics and Evolution 173 (107519): 1-11. 
  9. ↑ Kobayashi, H.; Mokodongan, D.F.; Horoiwa, M.; Fujimoto, S.; Tanaka, R.; Masengi, K.W.A.; Yamahira, K. (2023). "A New lacustrine Ricefish from central Sulawesi, with A Redescription of Oryzias marmoratus (Teleostei: Adrianichthyidae)". Ichthyological Research 70: 490–514. doi:10.1007/s10228-023-00908-2. 
  10. ↑ Uwa, H.; Magtoon, W. (1986). "Description and karyotype of a new ricefish, Oryzias mekongensis, from Thailand". Copeia 51: 473–478. doi:10.2307/1445005. 
  11. ↑ Utama, I.V.; Mokodongan, D.F.; Lawelle, S.A.; Masengi, K.W.A.; Yamahira, K. (2024). "A new ricefish, Oryzias moramoensis (Adrianichthyidae), described from a mountain waterfall in Southeast Sulawesi, Indonesia". Ichthyological Research: 490–514. doi:10.1007/s10228-024-00981-1. 
  12. ↑ 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. http://si-pddr.si.edu/dspace/handle/10088/10952. Retrieved 2011-07-20. 
  13. ↑ Möhring, J.; Mokodongan, D.F.; Gani, A.; Wowor, D.; Annawaty; Böhne, A.; Herder, F. (2025). "A New and Unique Species of Ricefish (Teleostei: Adrianichthyidae: Oryzias) from the Lariang River Basin, Sulawesi, Indonesia, and the First Known Sympatric Ricefish Species Pair from Sulawesi Rivers". Ichthyology & Herpetology 113 (1): 61-74. 
  14. ↑ 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. 

Wikidata ☰ Q2371293 entry



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