How to Fish Boss Guides — Every Boss Fight

Bosses in How to Fish block island progression, and several have phases or trigger conditions the game never explains. Each guide covers where the boss is, how to trigger the fight, every phase, and what the drop unlocks next.

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Spider Crab boss rising on long stick legs near the lighthouse in How to Fish with a boss health bar at the top

Bosses · Updated

How to Beat the First Boss (Spider Crab) in How to Fish

First boss · Lighthouse Island

Giant Piranha boss fight in How to Fish showing the boss health bar, small piranha swarm, kill multiplier and white timer bar

Bosses · Updated

How to Beat the Giant Piranha Boss in How to Fish

Boss #2 · Island 2

Pufferfish boss with full health bar spawning in the Island 3 lagoon in How to Fish

Bosses · Updated

How to Beat the Pufferfish Boss in How to Fish

Island 3 boss · Biggest early-game spike

Giant whale looming over the island camp in How to Fish with the Killed Bowhead Whale reward text on screen

Bosses · Updated

How to Beat the Volcanic Whale in How to Fish

Final boss · Both phases

Military camp on Volcano Island in How to Fish with the Scientist NPC in a yellow hazmat suit

Bosses · Updated

Where to Find the Volcanic Whale Boss in How to Fish

Final boss · Volcano Island

The Mutated Bowhead Whale boss flying overhead in How to Fish with its red health bar on screen

Bosses · Updated

Volcanic Whale Phase 2 Guide (Mutated Bowhead Whale)

Final boss · Phase 2

Military camp on Volcano Island in How to Fish with weapons on crates and the Scientist in a yellow hazmat suit

Bosses · Updated

How to Beat the Whale Solo in How to Fish

Final boss · Single-player

New here? Start with Pufferfish Boss Guide.