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Macropodus ocellatus

Basic information
Scientific name Macropodus ocellatus (No picture)
Common names Paradise fish
Higher taxon Osphronemidae, Perciformes, Actinopterygii
Natural range Chang Jiang River to W Korean Peninsula.
Habitat Lowland shallow ponds, rice fields, canals irrigation, etc.
Invasion information
Range in Japan Niigata, Ibaraki, Nagano, Aichi, and Okayama Prefs.
This species was established in wider region in past, but have disappeared in many regions, probably due to urbanization and farm area consolidation.
Range in Japan
Origin Korean Peninsula (around Seoul)
Date Privately imported in 1914. In Kanto District, this species was escaped in 1917. In Okayama Pref., this species was released in 1937. By 1970, released in several regions in Honshu Is. The first record in Kasumigaura Lake, Ibaraki Pref., was in 1930.
Route Deliberate: Escape of pet animal (in Kanto District, 1917); Release for biological control of the parasite Schistosoma japonicum
Impact Unknown impact.
Regulation in Japan No action for prevention, mitigation, control, or eradication.
Introduced range in other countries
Reference Notes
  • FishBase, accessed on 2010-06-15,
  • Kitagawa & Hosoya (2011) Vicissitudes of roundtail paradise fish Macropodus ocellatus (Cantor, 1842) introduced to the japanese Archipelago. Bull Biogeogr Soc Japan. 66, 49-55 (in Jpn with English abst)
  • Kawanabe et al. (eds) (2002) Freshwater Fishes of Japan, 3rd ed.. Yama-kei Publishers, Tokyo (in Jpn)
  • Matsuzawa & Senou (2008) Alien fishes of Japan. Bun-ichi Sogo Shuppan, Tokyo (in Jpn)
  • Yanai et al. (2008) The introduction process in alien fishes found from Lake Kasumigaura and Kitaura. Bull Ibaraki Pref Freshwater Fishery Exper St. 41, 47-54 (in Jpn)
  • etc.