The lake trout has a similar spawning behavior like the salmon. In November, rising the lake trouts up the rivers where they were born. This natural spectacle fascinates me every year. The spawning lake trout have a size up to one meter. It is the largest migratory fish in my area. 20 years ago, the lake trout was endangered. Thanks to the artificial rearing the trout survived. The lake trout in Lake Constance is no longer endangered
