Fishing Island & Boss Progression Walkthrough
This guide walks you through the full island progression in the fishing game, from the starting dock to the final boss. You’ll learn what gear to bring, how to catch each required fish, and the exact strategy for defeating each boss. By the end, you’ll have a clear path to 100% completion.
What You’ll Need
- A rod upgraded to at least level 5 (preferably level 7 for the final island)
- At least 50,000 coins saved for bait, lures, and travel fees
- All three passive skills unlocked: Fish Sense, Line Strength, and Lucky Catch
- Patience – some fish only appear during specific in-game times or weather
Step-by-Step
- Complete the tutorial and first island. Catch the 5 starter fish (Minnow, Perch, Carp, Trout, and Bass) to unlock the boat. Sell everything except the strongest rod you can buy.
- Upgrade your rod to level 3 before leaving. This gives you enough line strength to handle the next island’s fish without breaking your line constantly.
- Travel to Island 2: Rocky Shore. Pay the 500 coin ferry fee. Fish here until you catch the 8 required species – the most important is the Lobster, which only appears at night. Use a crab pot lure for best results.
- Defeat the first boss: The Crab King. This boss appears after you catch all 8 species. It has a simple pattern: it lunges three times, then pauses. During the pause, reel in quickly. Use a heavy line and avoid reeling while it moves – you’ll lose 20% durability per second.
- Unlock Island 3: Sunken Forest. After the Crab King, the boat captain offers a new route. You need a rod level 5 or higher to survive the deep water. Stock up on medium lures – they work best here.
- Catch the 10 Sunken Forest species. The rare Ghost Eel only spawns during foggy weather (check the in-game forecast). The Mossy Grouper requires a mossy bait, which you can craft from 10 seaweed and 5 worms.
- Fight the second boss: The Drowned Kraken. This boss has two phases. In phase one, it sends tentacles that you must hook and reel in to stun it. In phase two, it spins – stop reeling and let the line go slack, then reel hard when it stops. Use a level 6 rod or higher to survive the fight.
- Reach Island 4: Crystal Caverns. This is the final island. The entrance requires a special key dropped by the Kraken. Once inside, you’ll find 12 new fish, including the Prismatic Anglerfish which only appears during a full moon.
- Complete the Crystal Caverns collection. Use the crystal lure (crafted from 5 crystal shards and 2 glow worms) for the rare fish. The Luminous Squid requires you to turn off your boat’s lights – it’s attracted to darkness.
- Defeat the final boss: The Leviathan. This boss has three phases:
- Phase 1: It circles you – cast your line into its path and hook it when it passes.
- Phase 2: It summons minions – ignore them and focus on the main boss.
- Phase 3: It charges – dodge left or right (use the arrow keys), then reel in when it crashes into the wall.
Use your highest durability line and a level 7 rod. This fight takes about 10 minutes.
- Claim the final reward. After defeating the Leviathan, you get the Leviathan Rod (infinite durability) and the Angler’s Crown cosmetic. You can now freely travel between all islands.
Common Mistakes
- Not upgrading your rod before moving on. Each island requires a minimum rod level – trying to skip ahead will just waste bait and time.
- Reeling during boss attacks. Most boss damage comes from reeling while the boss is moving. Always stop reeling when the boss moves, and only reel during pauses or stuns.
- Ignoring weather and time conditions. Many rare fish only appear at specific times. Check the in-game clock and forecast before heading out.
- Selling rare fish. Some fish are needed for quests or crafting. Always keep at least one of each species until you’ve completed the island’s collection.
- Using the wrong lure. Each island has a preferred lure type. Using the wrong one drastically reduces your catch rate.
Tips
- Save before boss fights. If you fail, you can reload and avoid losing your bait and line.
- Buy bait in bulk. Bait is cheaper when bought in packs of 50 or more from the traveling merchant.
- Upgrade your boat’s fuel tank. This lets you stay out longer without returning to port, which is essential for rare fish that spawn at odd times.
- Use the fish radar. Once unlocked, it shows you which fish are in the area – use it to target specific species.
- Complete side quests. They often give you rare lures and rod upgrades that make the main progression easier.
Troubleshooting
- Boss not appearing. Make sure you’ve caught every required fish on the island. Check your collection log – the boss spawns only after the island’s collection is complete.
- Fish not biting. Try changing your lure to match the island’s preferred type. Also check the time of day – some fish only bite at dawn or dusk.
- Line keeps breaking. Your rod is too weak for the fish. Upgrade it or use a lighter line (yes, lighter line can help because it reduces drag).
- Game crashes during boss fight. Lower your graphics settings – the boss fights have heavy particle effects that can cause performance issues.
- Lost your key item. If you somehow drop a quest item, check the lost & found at the main dock. You can rebuy it for a small fee.
- Stuck on a specific fish. Look up the fish’s spawn conditions in your journal. If it’s weather-dependent, wait for the right forecast.
Frequently Asked Questions
How long does it take to complete the full island progression?
On average, it takes 15-20 hours of playtime. The boss fights and rare fish spawns are the most time-consuming parts.
Can I go back to previous islands?
Yes, once you unlock a boat, you can travel back to any previously visited island. The ferry fee is only charged when you first unlock a new island.
What’s the best rod upgrade order?
Focus on line strength first, then reel speed, then luck. Line strength prevents breakage, reel speed shortens fights, and luck increases rare spawns.
Do I need to catch every fish on an island before the boss appears?
Yes, the boss spawns only after you’ve caught all the required species listed in your collection log for that island.
What happens if I lose to a boss?
You respawn at the dock with reduced line durability and lose any bait you used. The boss will still be there, so you can try again immediately.
Is there any benefit to catching duplicates?
Yes, you can sell duplicates for coins. Some rare fish also drop crafting materials that are used to make powerful lures.
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