I am convinced that the migration of the trout must be one of the most touching phenomena of life on this planet. In their thousands of miles’ journey of migration to the sea, the trout swim inexhaustibly, often against the currents, with little rest and consumption of food, shuttling through countless turbulent rivers and treacherous shoals, with the sole purpose to fulfill their sacred mission of life reproduction. It is precisely this tenacity of the will that has guaranteed the successful survival of the trout family in the entire history of evolution.