Catching a Sandfish in Stardew Valley requires specific conditions to be met. This fish can only be found during the summer season, when the weather is sunny. Additionally, players must have access to the beach, which becomes available after completing the Community Center or purchasing a Beach Resort from Willy. Once at the beach, players can cast their lines from either the shore or a boat to try and catch a Sandfish.
Sandfish are relatively easy to catch with the right bait. Using a Cork Bobber and Worms or Grubs as bait will increase the chances of success. Once hooked, players should reel the fish in slowly and carefully to avoid losing it.