Cosmic love fish is a valuable catch in the Stardew Valley game. This lovable creature can be found in the stream during wet days and at night. If you manage to hook a Cosmic heart fish, you can sell it for a decent sum of money. In addition to its price, it is also highly sought after by fishermen for its exquisite appearance. So, grab your fishing rod and head to the streamside to try your luck at catching this Stardew eel. Happy fishing!