Occurrence | introduced | ||
Importance | Ref. | ||
Aquaculture | Ref. | ||
Regulations | Ref. | ||
Freshwater | Yes | ||
Brackish | No | ||
Saltwater | No | ||
Live export | |||
Bait | No | ||
Gamefish | No | ||
Abundance | Ref. | ||
Comments |
Occurs in the Rhine. Inhabits middle and lower reaches of rivers. Spawning occurs upstream over gravel (Ref. 30578). In "Annexe III de la Convention de Berne". Important regression in Central Europe because of pollution and obstacle to its migration (Ref. 40476). Also Ref. 13686. |
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States/Provinces | |||
States/Provinces Complete? | No | ||
National Checklist | |||
Country information | https://www.cia.gov/library/publications/resources/the-world-factbook/geos/fr.html |