How to Get the Halibut Harpoon in Fisch - Full Quest Guide

One of the most OP rods around!

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The Halibut Harpoon is one of the best rods in Fisch, sometimes even eclipsing the coveted Olympian Godbreaker. As such, getting it is incredibly difficult, to the point where it isn't even required for the Masterline Rod.

In this guide, we'll help you through every step of the Halibut Harpoon quest chain, and we'll give you a few tips on how to finish it as quickly as humanly possible.

How to Start the Halibut Harpoon Quest

IMPORTANT: You must be at least level 1,000 before you can start the quest!

To begin, you must first visit Dr. Monty's Lab in The Deep. If you need help gaining access to that zone, we have an in-depth guide on how to enter The Deep in Fisch.

You can find his lab in the far north, at the Outer Deep where Beacon 1P-2 is located. Enter the window behind the Cartographer.

The entrance to Monty's Lab in Fisch

Once inside, talk to Dr. Monty to start the Halibut Harpoon questline.

Dr. Monty in Fisch

Answers to Dr. Monty's Questions

Before the quest officially begins, Dr. Monty will insist that you answer three questions first. Here are the correct answers so you can avoid getting punished:

#

Question

Correct Answer

1

The goggobites gather for what?

Hubbbermistchen

2

What is the value of a Sparkling Shiny Aether Pufferfish?

16,736.03 C$

3

What is my favorite color?

Orange...?

Quest #1 - Pufferfish Abroad

NOTE: While doing the first couple of quests, try to complete Daily & Weekly Challenges to try and get a Nuke. This will be important at the final stretch of the questline.

For your first real task, Dr. Monty will ask for different types of Pufferfish (10 of each variant). In the table below, we'll show you where and how to catch all the required variants:

Fish

Location

Preferences

Extra Tips

Pufferfish

Ocean

Season: Summer
Bait: Seaweed, Carrot Sticks

Easy to catch in the surrounding waters of Roslit Bay

Flying Pufferfish

Above the Clouds

Season: Summer
Bait: Seaweed

Make sure you have a rod long enough to fish there, or use a harpoon

Blight Pufferfish

Toxic Grove

Bait: Weird Algae

Don't forget to equip the Gas Mask

Pufferflute

Crystal Cove

Weather: Clear
Time: Day
Season: Autumn
Bait: Flakes

N/A

Pyrite Pufferfish

Mariana's Veil - Volcanic Vents

Time: Night
Season: Autumn
Bait: Shrimp

You need to do an obby to reach the fishing area

Carrot Pufferfish

Carrot Garden

Weather: Rain
Season: Spring

In case you didn't know, the Carrot Garden is accessed via the Mushgrove Swamp

Mustard

Ocean

Weather: Rain
Season: Summer
Bait: Seaweed

Simply maximize your luck and fish in the open ocean

Once you're done, return to Dr. Monty to start the next part of the quest chain.

A Carrot Pufferfish in Fisch

Quest #2 - Collect My Pufferfish

You'll now be tasked with collecting even more Pufferfish. This time, it's a long list of different mutated variants of the regular Pufferfish (10 for each mutation).

IMPORTANT: All 10 of each mutation must be a Perfect Catch, further adding to the already difficult challenge.

For this part, you can stick to Roslit Bay. Use a Fish Radar to find the exact spot of the Pufferfish abundance.

Pufferfish abundance in Roslit Bay in Fisch

It's an exhaustive list that you can complete in Roslit Bay, granted you have the required rods. Here are all the details for each mutation:

Mutation

Ideal Rod

Extra Tips

Wrath

Rod of the Zenith

Dead Man's Rod can also be used

Rotting

Splitbranch Twig

N/A

Exploded

The Boom Ball

N/A

Lost

The Lost Rod

N/A

Celestial

Celestial Rod

Activating the Celestial status effect (which grants the mutation) requires you to use this rod to catch 15 fish first

Sanguine

Any with the Sacrificial enchantment

A fully-mastered No-Life Rod also works

Crystalized

Crystalized Rod

N/A

Heavenly

Heaven's Rod

We have a guide on how to get the Heaven's Rod if you don't have it yet

Sunken

Dead Man's Rod

The Sunken Rod also works, but at a much lower base rate

Greedy

Rod of the Eternal King

Dead Man's Rod can also be used

Bellona's Fury

Bellona's Waraxe

We have a section on how to get the Bellona's Waraxe if you don't have it yet

Mastered

Ruinous Oath

N/A

Sandy

Any with the Pharaoh's Curse enchantment

N/A

Rainbow Cluster

Rainbow Cluster Rod

There's also a small chance to get this naturally during the Rainbow weather event

Honey

Sweet-Stinger

N/A

Solarblaze

Wicked Fang Rod

The Phoenix Rod can be used as well, albeit with a lower rate

Siren's Spite

Evil Pitchfork

N/A

Hexed

Rod of the Depths

The No-Life Rod can be used if you have it

Toxic

Toxic Spire Rod

Toxinburst also works for this

Brined

Brine-Infused Rod

N/A

Mythical

Mythical Rod

N/A

Withered

Decayed Rod

This is the only mutation that requires 5 Perfect Catches rather than 10 (also, the Withered Spear can be used for this)

Atlantean

Trident Rod

A Trident Striker harpoon can be used as well

Lunar

Moonlit Rod

N/A

Lucid

Lucid Rod

N/A

TIP: The Mutated Sharky companion may help increase the chances for mutations in general.

After completing the long list of mutated Pufferfish, return to Dr. Monty and brace yourself for the next challenge.

Quest #3 - Intermission Time

You get a bit of time to rest after that exhaustive list, as the next quest simply asks you to wait 5 hours. Return to Dr. Monty once enough time has passed.

Quest #3 - Intermission Time in Fisch

Quest #4 - Pufferfish Electric Boogaloo

Upon starting Pufferfish Electric Boogaloo, you'll be given yet another long list of mutated Pufferfish that you must collect. Again, each mutation must also be a Perfect Catch.

In the table below, we'll go through what mutations you need, how many Pufferfish you need to catch for each variant, and which rods are the best to use:

GENERAL TIP: Use Carrot Sticks for bait when using rods with low mutation rates (e.g. Duskwire).

Mutation

Number of Pufferfish

Ideal Rod

Extra Tips

Fabulous

10

Fabulous Rod

N/A

Tryhard

10

Tryhard Rod

N/A

Forest spirit

2

Spirit of the Forest

N/A

Verdant

10

Verdant Oath

N/A

Mossy

2

Elder Mossripper

N/A

Igneous

10

Igneous Rupturer

N/A

Serene

2

Duskwire

The Polaris Serenade or Astraeus Serenade are much better, though these are currently unobtainable

Obsidian

10

Chasm-Stalker

N/A

Nuclear

10

Any rod

This requires a Nuke, which is why you were asked to look for one earlier

Shady

10

Shady Rod

N/A

Spirit

5

Spiritbinder

N/A

Blue Moon

2

Any rod

Can only be done during a Blue Moon weather event

Putrid

1

Any rod

Requires the Putrid enchantment

Blessed

10

Seraphic Rod

The Destiny Rod can be used at a much lower chance

Shiny King's Blessing

2

Poseidon Rod

The Kings Rod can be used, though it has half the mutation rate

Gleebous

10

Blade of Glorp

N/A

Shiny Harmonized

10

Pinion's Aria

N/A

Puritas

2

Onirifalx

N/A

Royal

10

Rod of the Eternal King

The Royal Spear has a better mutation rate if you have it

Photical

2

Terrotrapper

N/A

Oscar

2

Great Rod of Oscar

N/A

Gravitas

10

Olympian Godbreaker

N/A

Bioluminescent

10

Luminous Rod

The Firefly Rod can also get this, but only at night

Distraught

10

Dreambreaker

Higher odds for mutation at night

Hades' Curse

2

Hades' Soul-Scythe

N/A

Catching a Shiny King's Blessing Pufferfish in Fisch

When you finally complete this long list, return to Dr. Monty once again.

Quest #5 - 500 Pufferfih!

Upon returning to Dr. Monty, he'll reward you with a Restricted Halibut Harpoon. You'll need to use it to Perfect Catch 500 Pufferfish to complete this part of the quest chain.

You can buy Carrot Sticks from Dr. Monty to help you finish this faster. Each piece costs only 56 C$, and you can buy up to a thousand in one go.

Once more, return to Roslit Bay and equip the Halibut Harpoon to start chipping away at the massive quest objective.

Receiving the Restricted Halibut Harpoon in Fisch

Quest #6 - The Final Hoard

After Perfect Catching 500 Pufferfish, Dr. Monty will ask you to collect one last set of mutated Pufferfish. This time, these mutations have an equal 20% chance using the Halibut Harpoon.

Equip your Restricted Halibut Harpoon and go back to the Pufferfish spot one last time. You only need to Perfect Catch the following:

  • 25 Bathyal Pufferfish
  • 25 Thalassic Pufferfish
  • 25 Hadal Pufferfish

Fishing with the Halibut Harpoon in Fisch

Permanently Unlocking the Halibut Harpoon

Finally, the last step after that long and arduous quest chain is to pay Dr. Monty 50,000,000 C$. Afterwards, you are officially done with the Halibut Harpoon questline.

You should now have the unrestricted version of the Halibut Harpoon, which can be used as either a rod or a harpoon gun. To switch modes, simply press Q on your keyboard.

Paying Dr. Monty 50,000,000 C$ in Fisch

Congratulations, you now have one of the best rods in Fisch!