Cosmic heart snakelike creature is a valuable catch in the Harvest Moon game. This lovable creature can be found in the river during wet days and at night. If you manage to hook a Cosmic heart fish, you can sell it for a good price. In addition to its worth, it is also in demand by fishing enthusiasts for its ornate beauty. So, grab your angler gear and head to the riverbank to try your luck at catching this Stardew eel. Happy fishing!