European sea sturgeon  (Acipenser sturio)

Previously abundant along all European coasts, this sturgeon is today restricted to a single, reproductive population that breeds in the Gironde River, France (5).

Sturgeons are found near to the bottom of the water column, over a soft sandy or muddy substrate (6). Adults are found in the lower sections of large rivers and in the open sea, whilst spawning occurs upriver in shallow pools with a gravel base (6).