Stardew fish is a valuable catch in the Stardew Valley game. This creature can be found in the stream during rainy weather and at night. If you manage to reel in a Stardew eel, 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 creek side to try your luck at hooking this Cosmic heart fish. Happy fishing!