What fish returns from the ocean to fresh waters where it was born?

The salmon is the fish that returns from the ocean to fresh water where it was born. Salmon are anadromous fish, which means they spend part of their lives in saltwater and part in freshwater. They are born in freshwater rivers and streams, and then migrate to the ocean where they spend most of their adult lives. When they are ready to spawn, they return to the same freshwater rivers and streams where they were born. This migration is called a salmon run, and it is an amazing sight to see. Salmon are able to navigate their way back to their home rivers and streams by using their sense of smell.