Cosmic aquatic animal is a valuable catch in the Harvest Moon game. This heart fish can be found in the creek during stormy days and at night. If you manage to catch a Stardew eel, you can sell it for a handsome profit. In addition to its monetary value, it is also coveted by fishermen for its exquisite appearance. So, grab your angler gear and head to the streamside to try your luck at capturing this Galactic love creature. Happy fishing!