Cosmic heart eel is a valuable catch in the Harvest Moon game. This heart creature can be found in the creek during rainy days and at night. If you manage to hook a Stardew eel, you can sell it for a handsome profit. In addition to its monetary value, it is also coveted by fishing enthusiasts for its exquisite appearance. So, grab your fishing rod and head to the riverbank to try your luck at capturing this Galactic love creature. Happy fishing!

Lava Eel Stardew Valley Wiki