Life of the Sockeye salmon begins in the river. It is like a life of salmon, which is the ancestor of Sockeye salmon. They go out to the lake, and color of body becomes silver. Also, they become strong enough to spend their lives in the seawater. The Sockeye salmon still has the same characteristics as the ancestor has even though in the different environment.

The Sockeye salmon spend 3 or 4 years in the ocean, and start coming back to the river when they redden for spawning. Male trout is waiting for ejaculation while female trout digs a hole for spawning. They will die after the spawning. You can see the spawning on the riverside near Shobugahama.