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Farming of filter-feeding molluscs of the family Mytilidae called "mussels", more often marine mussels (by distinction of freshwater mussels).
Departmental guidance document for public action in the management and conservation of aquatic environments and fish fauna. The Departmental fish conservation plan (SDVP) is approved by prefectural order after advice from the Departemental Council. It makes an assessment of river status and defines objectives and priority actions.