Koubaru Iwame Trout Habitat in the Ono River System, Taketa
竹田市神原の大野川水系イワメ生息地 · Taketashikoubarunooonogawasuikeiiwameseisokuchi
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- National / Natural Monument
- Designation type
- Habitat / breeding site
- Designated on
- February 26, 2019
- Location
- 大分県竹田市
- Prefectures
- Oita
- Scientific name
- Oncorhynchus masou
About the Iwame (landlocked masu salmon)
The Iwame is a markless form of the masu salmon complex, lacking the usual parr marks and black spots. The population in the designated habitat in Taketa, Oita, is considered a mutant form of amago. It lives in a very small number of mountain streams, including those in the Sobo mountain area of the Ono River system. A habitat at Kobaru in Taketa is a national Natural Monument, and the Iwame of the Sobo mountains is a Natural Monument of Oita Prefecture.
Natural Monuments related to the Iwame (landlocked masu salmon) →Map
Approximate location of the designated site (municipality centre).
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Frequently asked questions
The designated site is in 大分県竹田市.
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