Galactic heart eel is a valuable catch in the Stardew Valley game. This heart creature can be found in the river during rainy weather and at night. If you manage to catch a Cosmic heart fish, you can sell it for a handsome profit. In addition to its monetary value, it is also in demand by fishing enthusiasts for its captivating charm. So, grab your fishing rod and head to the streamside to try your luck at capturing this Cosmic heart fish. Happy fishing!