A Remarkable Diversity :: With 39 referenced species, and among them18 targeted in national or international regulations, it is the very last refuge for all the “sea-river” migratory fishes, including European sturgeon ( Acipenser sturio ), allis shad ( Alosa alosa ), twaite shad ( Alosa agone ), eel ( Anguilla anguilla ), river lemprey ( Lampetra fluviatis ), marine lamprey ( Petromyson marinus ), Atlantic salmon ( Salmo salar ), and sea trout ( Salmo trutta trutta ). The Dordogne Bassin also has several habitats of Community interest (Habitats Directive and CORINE Classification), with floating water-plantain ( Luronium natans ), officinal gratiola ( Gratiola officinalis ), summer snowflake ( Leucojum aestivum ), pulicaria ( Pulicaria vulgaris ), and Roman squill ( Bellevalia romana ) to name just a few. Otters and Birds :: Evidence (pictures and faeces) demonstrates that there are otters ( lutra lutra ) downstream and upstream. Both otters’ populations have started to joi...