Galactic heart fish is a valuable catch in the Harvest Moon game. This lovable fish can be found in the creek during rainy weather and at night. If you manage to hook a Cosmic heart fish, you can sell it for a good price. 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 riverbank to try your luck at capturing this Stardew eel. Happy fishing!