Now that they're in the wild they have a lot to accomplish. Now they always swim above the rocks because they need to get food to eat. They only hide if a predator comes. They also travel in schools because it is safer then traveling alone. After a white they go to the nearest lake because they usually need more food and a better place to hide.
Some fish only can go to the ocean.
They are called anadramous fish. They can breath fresh water and salt water. The fish are usually about two to four years old before they spawn. The last stage is the spawning stage. In this stage they have to go back up stream to where they hatched to spawn.