Mouse P.I. For Hire – Fishy Business Side Job Guide: Marina 8-ED Herring Location

Image credit: Fumi Games

What to know

  • You start the quest by speaking to John Brown at Little & Big in town
  • The objective is to retrieve the Marina 8-ED Herring box from a hidden storage spot
  • The location is tucked behind a building in Wallop Bay with specific visual clues
  • Completing the mission rewards you with 1 token

You will find Fishy Business to be a short but cleverly designed side job in Mouse P.I. For Hire, requiring observation and careful navigation rather than combat. The task revolves around tracking down a specific item hidden in a slightly obscure location, making it easy to miss if you are not paying attention to environmental details.

Mouse PI For Hire – Fishy Business side job details

DetailInformation
Quest NameFishy Business
Starting NPCJohn Brown
Start LocationLittle & Big (Town)
Main ObjectiveRetrieve Marina 8-ED Herring
Key AreaWallop Bay
Reward1 Token
DifficultyEasy

Location to start Fishy Business side job

To begin, head to Little & Big in town and speak with John Brown. He assigns you the task in his signature style, asking you to “snatch the reeker,” which refers to retrieving the Marina 8-ED Herring box. The objective is simple, but the path to it requires careful navigation and attention to detail.

Image credit: Fumi Games / Via: YouTube – Jun Guides

How to complete Fishy Business side job in Mouse PI For Hire

Step 1

Go to Little & Big in town and speak with John Brown to start the Fishy Business side job.

Image credit: Fumi Games / Via: YouTube – Jun Guides
Step 2

After accepting the quest, travel to Wallop Bay and begin scanning the area for a building marked with a large ship anchor. This anchor is your primary landmark and confirms you are in the correct zone.

Image credit: Fumi Games / Via: YouTube – Jun Guides
Step 3

Position yourself facing the building and move toward the alley on its right side instead of entering from the front. The front entrance will not help you progress, so the alley route is essential.

Image credit: Fumi Games / Via: YouTube – Jun Guides
Step 4

Follow the alley all the way to the back of the building, keeping an eye on the walls for visual clues. You are specifically looking for a distinctive heart-stabbed graffiti, which confirms the correct entry point.

Image credit: Fumi Games / Via: YouTube – Jun Guides
Step 5

Enter the building through this backside access and immediately orient yourself toward vertical movement inside. The layout is simple, but knowing where to go saves time.

Image credit: Fumi Games / Via: YouTube – Jun Guides
Step 6

Make your way up to the first floor and turn toward the left side of the interior. Stay along this side until you find an opening that stands out.

Image credit: Fumi Games / Via: YouTube – Jun Guides
Step 7

Locate a window that overlooks a vertical light well shaft inside the building. This is the key location indicator and confirms you are exactly where you need to be.

Image credit: Fumi Games / Via: YouTube – Jun Guides
Step 8

Look down through the window into the light well and identify the Marina 8-ED Herring box sitting at the bottom. The item is clearly visible once you are in the correct position.

Image credit: Fumi Games / Via: YouTube – Jun Guides
Step 9

Carefully navigate down into the light well area or use the available path to reach the bottom and collect the Marina 8-ED Herring. Ensure the item is added to your inventory before leaving.

Image credit: Fumi Games / Via: YouTube – Jun Guides
Step 10

Exit the building and return to Little & Big in town without any detours. There are no additional objectives once the item is collected.

Image credit: Fumi Games / Via: YouTube – Jun Guides
Step 11

Speak with John Brown again and submit the Marina 8-ED Herring to complete the Fishy Business side job successfully.

Image credit: Fumi Games / Via: YouTube – Jun Guides

Rewards for completing Fishy Business

Fishy Business is a quick and satisfying side job that rewards careful exploration and attention to environmental clues. You are encouraged to observe landmarks, use alternate paths like alleys, and identify subtle indicators such as graffiti and vantage points.

Reward TypeDetails
Currency/Item1 Token
Quest CompletionFishy Business side job cleared

While the reward is modest, the mission provides a smooth and engaging experience that fits perfectly into the investigative tone of the game.


Fishy Business is a compact yet satisfying side job that highlights exploration and environmental awareness. By following the correct alley route, identifying graffiti clues, and locating the light well vantage point, you can complete the mission quickly without confusion. It is a great example of how small details guide progression in Mouse P.I. For Hire, making the experience feel rewarding despite its short length.

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