The Pufferfish boss in How to Fish presents a significant challenge, introducing a noticeable difficulty spike for players. Successfully defeating this boss requires strategic preparation and careful execution during the fight.

Acquiring Pufferfish Bait

To begin the quest for Pufferfish bait, speak with the swimmer in yellow floaties on the third island. This character will ask for your assistance in defeating a troublesome fish and offers bait in exchange for a promise of repayment. Before the swimmer will provide the necessary snacks, you must locate an endangered creature. Purchase the new Fishing Rod for $3 and the Standard Lure for $15. Use the Standard Lure to catch endangered creatures, ensuring you examine them with the F key before selling any. Feed the fish identified as 'endangered creatures' to the swimmer to receive Carrot Bait, which is essential for luring the Pufferfish.

Strategies for the Pufferfish Battle

The Pufferfish is a formidable opponent, and overcoming it may take several attempts. The shotgun is ineffective against this boss; a better option is the SMG, which costs $650. Invest in as many bullet upgrades as your budget allows. During the fight, constant movement is crucial. Utilize the environment, particularly trees, to create distance between yourself and the boss. Avoid its purple poison attack at all costs, as the damage-over-time effect can quickly become lethal. The Pufferfish grows larger as it takes damage. A helpful tactic is to lure the boss around the merchant's shop, as its larger size can cause it to get stuck when taking tight corners, providing brief openings. It is generally advised not to stop moving to shoot, as keeping on the move is key to survival. While it may be possible to skirt by previous boss fights with less focus on environmental tactics, mastering the terrain is essential for this encounter.

Players should also ensure their health and hunger meters are full by consuming seafood before engaging the Pufferfish. Patience is a virtue when facing this challenging boss, as is a good supply of ammunition and upgraded weaponry.