Stardew eel is a valuable catch in the Harvest Moon game. This lovable creature can be found in the river during stormy days and at night. If you manage to catch a Cosmic heart fish, you can sell it for a handsome profit. In addition to its price, it is also in demand by anglers for its exquisite appearance. So, grab your angler gear and head to the creek side to try your luck at capturing this Stardew eel. Happy fishing!