How to catch Puffer Fish | Stardew Valley

You need to have level 10 fishing skills with Advanced Iridium Rod. You also need to purchase both Trap Bobber and Lead Bobber to facilitate fishing from Willy's Shop at Pelican Beach. Now head to the southeast of Stardew Valley (Pelican Beach), and travel southwards to the left where you can see a wooden bridge that looks like a jetty connecting you to Willy's Shop. Halfway through the wooden bridge, you will see a huge rock in the sea at your left. Cast your rod towards the left into the sea next to the big rock at 12pm to 4pm on Summer season and only on sunny days and not on rainy days. After some time, you will be able to catch the fish.