Cosmic fish is a valuable catch in the Farming Simulator game. This
fish can be found in the stream during rainy weather and at night.
If you manage to hook a Stardew eel, you can sell it for a decent sum of money. In addition to its price, it is also in demand by fishermen for its exquisite appearance. So, grab your tackle box and head to the streamside to try your luck at capturing this Galactic love creature. Happy fishing!
Fried Eel Stardew Valley Wiki