How to Catch a Lava Eel in Stardew Valley Guide FallStardew love snakelike creature is a valuable catch in the Farming Simulator game. This fish can be found in the creek during wet 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 price, it is also highly sought after by fishermen for its exquisite appearance. So, grab your tackle box and head to the creek side to try your luck at capturing this Stardew eel. Happy fishing!