Is an eel anadromous fish?

Yes, the eel is an anadromous fish, meaning it spends part of its life in freshwater and part in saltwater. For certain times of year, the eel migrates from its fresh or brackish water habitat to lay eggs in the ocean, and then returns to its freshwater habitat. It is known to make extensive migrations, including across the Atlantic Ocean for European eel, and across the Pacific Ocean for the American eel.