You get the Trident Rod in Fisch by unlocking the special door in the Desolate Deep area, then buying it inside for a high cash cost (around 150k in‑game money in recent guides).

Basic requirements

  • Have Desolate Deep unlocked : You need access to the deep‑sea area where the Trident door is located.
  • Strong gear helps a lot:
    • Diving gear / advanced scuba gear for oxygen.
* Flippers or movement boosts so you can swim there safely.
  • A big money stash: recent walkthroughs show the Trident Rod costs about 150,000 in‑game cash once the door is open.

Think of it as an end‑game flex rod: pricey, hidden behind a puzzle, but very worth it once you’re farming deep‑sea fish.

How to open the Trident door

Different creators show slightly different “routes,” but they all agree you must complete specific conditions in Desolate Deep to unlock the door.

Typical steps from current guides:

  1. Go to Desolate Deep
    • Dive from the main island using your scuba gear and follow the deep path to the “Trident door” region.
  1. Place required fish / items on pedestals
    • Around the door there are altars/pedestals. You must catch and “offer” particular deep‑sea fish (and sometimes objects like sea mines) to each spot.
 * Examples of fish that recent videos mention for the puzzle include things like phantom ray, special crabs, sharks, and other rare Desolate Deep species.
  1. Fill your bestiary for Desolate Deep (in some methods)
    • One fast‑grind guide notes you need max bestiary for Desolate Deep for its method to work smoothly.
  1. When all requirements are placed
    • The big sealed door behind the puzzle opens, revealing a small area where the Trident Rod shop/altar is located.

Some guides also mention a way to get the door open “for free” (without paying a separate door fee), but you still pay for the rod itself.

Buying the Trident Rod

Once the door is open:

  • Walk/swim inside the unlocked chamber.
  • Interact with the Trident Rod pedestal / shop prompt.
  • Pay the cost (around 150k), and the Trident Rod gets added to your rod collection.

Many players recommend:

  • Farming with a strong rod (like Magnet Rod) in Desolate Deep first, to make the 150k grind faster.
  • Bringing good enchants on your current rod to fill the bestiary and collect the specific puzzle fish more quickly.

Tips, tricks, and “fast” methods

Recent community and creator tips:

  • Use Magnet Rod plus lure/rarity enchants to quickly pull the specific deep‑sea fish you need for the altars.
  • Focus on completing your Desolate Deep bestiary , because it naturally gets you almost everything needed for the door while also giving you lots of cash.
  • Buying advanced scuba gear from the buoy near the island makes the whole route much safer and less annoying.
  • Follow a video route the first time; many creators show exact swimming paths and pedestal locations so you don’t get lost in the Deep.

Is Trident Rod worth it?

Players and guides generally treat the Trident Rod as:

  • A high‑tier, late‑game rod with strong stats for deep‑sea fishing.
  • A good investment if you plan to farm Desolate Deep or just want a powerful, rare rod flex in your inventory.

If you enjoy grinding, puzzles, and deep‑sea farming, the Trident Rod is one of the most rewarding goals in Fisch right now.

TL;DR : Unlock Desolate Deep, complete the pedestal/altar puzzle by placing specific deep‑sea fish and items to open the Trident door, then buy the Trident Rod inside for about 150k cash.

Information gathered from public forums or data available on the internet and portrayed here.