| Occurrence | native | ||
| Importance | Ref. | ||
| Aquaculture | Ref. | ||
| Regulations | Ref. | ||
| Freshwater | Yes | ||
| Brackish | No | ||
| Saltwater | No | ||
| Live export | |||
| Bait | No | ||
| Gamefish | No | ||
| Abundance | Ref. | ||
| Comments |
Occurs in Hokkaido and the Iwate Prefecture (Ref. 559). Species distributed patchily in the headwater streams of Gakko River system, Tohoku District, Yamagata Prefecture (Ref. 38074). MtDNA studies revealed three distinct phylogenetic groups (Hokkaido Island, Northern Tohoku District and Yamagata Prefecture) of the species. This also provides the basic information for the conservation of the species populations in the Tohoku District which have been designated as endangered local populations (Ref. 43190). Also Ref. 37812. Status of threat: Threatened populations of Tohoku District(LP) (Ref. 94887). |
||
| States/Provinces | Akita (native), Aomori (native), Hokkaido (native), Iwate (native), Miyagi (native), Niigata (native), Yamagata (native) | ||
| States/Provinces Complete? | Yes | ||
| National Checklist | |||
| Country information | https://www.cia.gov/library/publications/resources/the-world-factbook/geos/ja.html | ||