The brown trout

The brown trout is a fish that is entirely suited to the Jura’s rivers, with their fresh and torrential waters. It has a slender fusiform body that is perfectly adapted to fast swimming. It feeds on the larvae of aquatic insects but also on small fish (including other trout!)
However, this species is very sensitive to the quality of water and to the artificialisation of waterways, which often goes hand in hand with the destruction of spawning grounds, caches and feeding grounds. Obstacles to the movement of trout also hinders the development of their numbers.