The Fishy Business Side Job in Mouse PI for Hire can be completed during the Saltwater Combozo Main Job. Before heading out onto the main job, make sure you activate the side job otherwise you’ll miss your chance to complete it.
Keep reading to learn how to start and finish the Fishy Business side job!
How to Complete Fishy Business in Mouse PI For Hire

First, go to the Little Big & Bar to talk to John Brown, the bartender there. He wants you to go find an ingredient for him. He has an idea for a new dish to sell at the bar. While his last one was a dud, John seems pretty confident about this one! You need to go to Wallop Bay to go find some Marina 8-ED Herring, the new ingredient John wants to get his little paws on.


Go complete the main job as you would. When you find this building with a heart and dagger graffiti right above the door, you know that you’ve reached the place. Go inside and head up the stairs. There will be this little shack. Head inside and then go out the other side.

There will be a drop at the edge of the platform. If you look down, you’ll see that the ingredient John Brown needs is right there on the ground! Head down and grab the ingredient. It is pretty smelly so you’ll want to get out of there quick as it will literally hurt you. The longer you stay in there, the more damage you are going to take so be warned.
Go back to John Brown at the bar. He gladly takes the smelly ingredient, which should make you question ever eating there in the future. In return for giving him the stinky fish, he’ll give you a Spike-D prize token for all your trouble.
Check out more Mouse PI for Hire guides!
| Mouse PI For Hire Side Jobs – Unlocking The Real Deal Gumshoe Trophy |
| Mouse PI For Hire Side Job – How to Complete They Call it “Azurro Burgerro” |
- Mouse PI For Hire Side Job – How to Complete Fishy Business - 22nd April 2026
- Mouse PI For Hire Side Job – How to Complete They Call it “Azurro Burgerro” - 22nd April 2026
- Pragmata Secret Ending – How to Get the True Ending - 20th April 2026
