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Keeper of the Underworld

Admin-event fish at 350 percent of your best earner.

Keeper of the Underworld in Steal A Fish

Keeper of the Underworld: Admin-event fish at 350 percent of your best earner. Get it by Admin event spawn or a rare sacrifice roll. Use it to If you see one, it is a percent capstone. It is not a fish you can schedule from the normal river.

By Steal A Fish WikiLast updated:

What is Keeper of the Underworld?

Keeper of the Underworld is described as an admin-event fish at 350 percent of your best flat fish. Fishaween sacrifice notes also name it as a rare altar result around 0.1 percent.

Published facts

FactValue
RarityAdmin
Income350 percent of your best flat fish
RolePercent fish

How do you get Keeper of the Underworld?

Admin event spawn or a rare sacrifice roll.

How do you use Keeper of the Underworld?

If you see one, it is a percent capstone. It is not a fish you can schedule from the normal river.

FAQ

Keeper of the Underworld questions

What do you actually do in Steal A Fish?

Fish come out of a tunnel and travel a river conveyor. Press E to buy one with cash. It walks to an empty pad in your house and generates cash every second. Step on the green floor button to claim that cash. Other players can carry a fish away if your force field is down and the fish is not Unstealable.

Does rebirth delete the whole base?

Written guides current through October 19, 2026 say a rebirth removes only the cash and the exact fish named on that level. The rest of the aquarium stays. One July 2025 play video described a wider loss of stolen fish, so confirm the checklist on the Rebirth button before you confirm.

Why do some fish not show a flat cash-per-second number?

A percent fish pays a share of your single best flat-income fish. Hungry Deer is listed at 150 percent, The Moon at 160 percent, and Cthulhu at 250 percent. If that flat anchor is sold, stored in the vault, or stolen, every percent fish drops with it.

Where is the Fish Vault and does it make money?

The Fish Vault is on the top floor after a late rebirth. Fish inside cannot be stolen, and they also stop generating cash. Use it for rebirth ingredients and prizes, and leave your best flat earner on a normal pad.

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See also

FishBlobfishRare fish required for Rebirth 3.Read guideFishClownfishRebirth 3 partner to Blobfish.Read guideFishAnglerfishRare flat earner at 19,000 cash and 170 per second.Read guideFishLurkerRare fish listed at 150 cash per second.Read guideSame topicSteal A Fish databasereferenceRead guideSame topicSteal A Fish MutationsreferenceRead guide