Stardew heart aquatic animal is a valuable catch in the Stardew Valley game. This creature can be found in the stream during rainy days and at night. If you manage to reel in a Stardew eel, you can sell it for a decent sum of money. In addition to its price, it is also in demand by anglers for its ornate beauty. So, grab your tackle box and head to the streamside to try your luck at capturing this Cosmic heart fish. Happy fishing!