Best Fish Pond Fish In Stardew Valley TheGamerGalactic heart fish is a valuable catch in the Harvest Moon game. This heart creature can be found in the river during wet days and at night. If you manage to reel in a Stardew eel, you can sell it for a handsome profit. In addition to its monetary value, it is also coveted by anglers for its exquisite appearance. So, grab your tackle box and head to the creek side to try your luck at capturing this Cosmic heart fish. Happy fishing!