The Halibut Harpoon is a unique piece of equipment in Fisch that allows players to use it as a regular fishing rod and a harpoon gun at will. To acquire the item, players must visit Dr. Monty and finish a set of quests offered by the NPC. If you are wondering how to start and complete the quest, here is a detailed guide.
Where is the Dr. Monty NPC in Fisch?
To start the quest, you must talk with the Dr. Monty NPC, who resides in his secret laboratory. To reach his lab, go to the Depths POI. Once you are underground, go to the GPS location (461, -2002, -13150.2) in Outer Deep. Here, you can find a group of buildings.

Now, enter through the highlighted window of the first building, as shown in the image above, to enter Dr. Monty's laboratory. Once inside, you can find Dr. Monty next to a board. Speak with him to start the quest.
All Dr.Monty Riddle Questions & Answers

Before giving the quest, Dr. Monty will ask a couple of questions that you must answer correctly to proceed. The table below contains all the questions Dr. Monty asks & the correct answers.
| Question | Full Answer |
|---|---|
| The goggobites gather for what? | Hubbermeisterchen |
| What is the base value of a Sparkling Shiny Aether Pufferfish? | 13,388.82 C$ |
| What is my favorite color? | Orange |
All Dr.Monty Quests & How to finish them
Quest 1
After you answer all the questions, Dr. Monty will give you the following set of quests that mainly revolve around catching various types of Pufferfish from various islands.
- Catch and return 10 Pufferfish
- Catch and return 10 Flying Pufferfish
- Catch and return 10 Blight Pufferfish
- Catch and return 10 Pufferflute
- Catch and return 10 Pyrite Pufferfish
- Catch and return 10 Carrot Pufferfish
- Catch and return 10 Mustard
The Below table contains all the Bait, Weather, Season & Timing requirements to catch the above-mentioned fish.
| Fish Name (Location) | Bait | Weather | Season | Time |
|---|---|---|---|---|
| Pufferfish (Roslit Bay / The Ocean) | Seaweed | Any | Summer | Any |
| Flying Pufferfish (Above The Clouds) | Seaweed | Any | Summer | Any |
| Blight Pufferfish (Toxic Grove) | Weird Algae | Any | Any | Any |
| Pufferflute (Crystal Cove) | Flakes | Clear | Autumn | Day |
| Pyrite Pufferfish (Volcanic Vents) | Shrimp | Any | Autumn | Night |
| Carrot Pufferfish (Carrot Garden) | None | Rain | Spring | Any |
| Mustard (The Ocean) | Seaweed | Rain | Summer | Any |
Quest 2
After finishing the first quest, Dr.Monty will give you an additional quest that revolves around catching the Pufferfish with various mutations. Since this can be confusing, I've listed each quest and the rod you must equip to get the required muation.
| Quest Objective | Rod to Equip |
|---|---|
| Perfect Catch and return 10 Rotting Pufferfish | Splitbranch Twig |
| Perfect Catch and return 10 Abyssal Pufferfish | Abyssal Specter Rod / Rod of the Depths |
| Perfect Catch and return 10 Lost Pufferfish | The Lost Rod |
| Perfect Catch and return 10 Celestial Pufferfish | Celestial Rod |
| Perfect Catch and return 10 Aurulent Pufferfish | Auric Rod |
| Perfect Catch and return 10 Crystalized Pufferfish | Crystalized Rod |
| Perfect Catch and return 10 Heavenly Pufferfish | Heaven's Rod |
| Perfect Catch and return 10 Sunken Pufferfish | Sunken Rod |
| Perfect Catch and return 10 Greedy Pufferfish | Rod of the Eternal King / Scurvy Rod |
| Perfect Catch and return 10 Bellona's Fury Pufferfish | Bellona's Waraxe |
| Perfect Catch and return 10 Mastered Pufferfish | Ruinous Oath |
| Perfect Catch and return 10 Sandy Pufferfish | Sand Castle Caster |
| Perfect Catch and return 10 Rainbow Cluster Pufferfish | Rainbow Cluster Rod |
| Perfect Catch and return 10 Honey Pufferfish | Sweet-Stinger |
| Perfect Catch and return 10 Solarblaze Pufferfish | Wicked Fang Rod / Fang of the Eclipse |
| Perfect Catch and return 10 Sanguine Pufferfish | Sanguine Spire |
| Perfect Catch and return 10 Tainted Pufferfish | Bloomspire: Twisted Toxins |
| Perfect Catch and return 10 Tidal Pufferfish | Rod of the Forgotten Fang |
| Perfect Catch and return 10 Brined Pufferfish | Brine-infused Rod |
| Perfect Catch and return 10 Mythical Pufferfish | Mythical Rod |
| Perfect Catch and return 10 Phantom Pufferfish | Eidolon Rod |
| Perfect Catch and return 10 Atlantean Pufferfish | Trident Rod |
| Perfect Catch and return 10 Lunar Pufferfish | Astral Rod / Event Horizon Rod |
| Perfect Catch and return 10 Lucid Pufferfish | Lucid Rod |
For more on Fisch, check out All 21 Fish in the Outer Deep (100% Bestiary) – Fisch or All 22 Fish in the Lower Deep (100% Bestiary) – Fisch