The Cthulhu in Steal a Fish is an Event-rarity unit that functions as a percentage multiplier rather than producing a flat income rate. It costs 666 Qi$ from the central river and generates income equal to 250% better than your best fish. Because its output scales dynamically based on your highest-earning creature, placing a Cthulhu in your base compounds total earnings across your entire tycoon setup.
In Roblox's Steal a Fish (developed by the group MY FISH FRIEND), high-tier progression revolves around acquiring a powerful flat earner—such as an Abyss-tier unit—and stacking percentage-based scalers around it. Cthulhu stands as one of the most prominent Event scalers alongside its rarer counterpart, Chaos Cthulhu.
What Is the Cthulhu in Steal a Fish?
Cthulhu is categorized under the Event rarity tier. Visually, it appears as a massive sea monster featuring red glowing eyes, large wings, and facial tentacles. Unlike standard river fish that generate fixed cash amounts (such as millions or quadrillions per second), Cthulhu's earnings are tied directly to your top-producing fish in your base.
When placed in your plot, Cthulhu produces 250% of the income generated by your single best earner. For example, if your highest flat producer outputs 2.3 Qa$/s or 11 Qa$/s, each active Cthulhu generates 2.5 times that figure per second. Gameplay testing also shows that mutations such as Void, Magma, Blizzard, or Rift can appear on spawned Cthulhu units, though the baseline multiplier stat remains 250% better than your best fish.
Cthulhu vs. Chaos Cthulhu Stats
The game features two distinct Cthulhu variants in the Event pool: the standard Cthulhu and the higher-tier Chaos Cthulhu. The table below lists their official in-game costs, rarities, and income scaling:
| Fish | Rarity | Price | Income Rate |
|---|---|---|---|
| Cthulhu | Event | $666 Qi | 250% better than your best fish |
| Chaos Cthulhu | Event | $10 Sx | 300% better than your best fish |
While standard Cthulhu requires 666 Qi$ to purchase directly from the river, Chaos Cthulhu costs 10 Sx$ (sextillion) and increases the multiplier to 300% better than your best fish. Both units occupy a standard fish slot in your base and will multiply off the single highest base earner placed on your floor.
How to Get Cthulhu in Steal a Fish
Players have three primary methods to acquire a Cthulhu: river spawns during server events, the Wheel of Fortune, or stealing one directly from another player.
1. River Spawns During Events and Admin Abuse
Cthulhu spawns in the river during specific server weather events and Admin Abuse sessions. Because Admin Abuse events rotate multiple server modifiers back-to-back—such as Rift, Blizzard, Infernal, Blood Moon, and Ancient events—spawning rates for high-tier and Event-exclusive fish increase significantly. To buy Cthulhu when it appears, you must have an open slot in your base and at least 666 Qi$ in cash available before it passes or gets purchased by another player.
2. Wheel of Fortune (Spinny Wheel)
The Wheel of Fortune is located near the Tool Store at the center of the map. You receive one free spin ticket for every 30 minutes of continuous gameplay. Spin tickets cannot be purchased with currency or Robux.
The wheel contains the following fixed reward drop rates:
| Reward | Drop Chance |
|---|---|
| Cthulu Fish | 1% |
| 5 minutes Cash Reward | 50% |
| 30 minutes Cash Reward | 25% |
| 4 Leaf Clover (10 mins 2x Server Admin Luck Boost) | 18% |
| Trigger Blizzard Event | 4% |
| Trigger Blood Moon Event | 2% |
Landing on the 1% slice instantly awards a Cthulhu to your collection without requiring the 666 Qi$ purchase fee.
3. Stealing from Other Players
As the core premise of the game, players can enter opponent bases, pick up an unprotected Cthulhu, and carry it back to their own base. Bases that lack intrusion alarms or active door defenses are vulnerable. However, fish stored with the Unstealable mutation or placed inside the Fish Vault cannot be taken.
Using Cthulhu for Fish Vault Upgrades
Beyond income generation, Cthulhu is a required component for expanding base storage. With the introduction of the Fish Vault on the top floor of the base, players can lock away rare units so they cannot be stolen. While fish placed inside the vault do not generate active income, unlocking extra vault slots requires completing specific rebirth milestones.
To perform the rebirth that grants +2 Fish Vault slots, you must submit the following requirements:
- $2.75 Qi money
- 1x Cthulhu
- 1x Aurorawhale
- 1x Hungry Deer
- 3x Star Strider
Completing this rebirth consumes the required fish and cash to permanently expand the vault by two slots.
Frequently Asked Questions
How much does Cthulhu cost in Steal a Fish?
Standard Cthulhu costs 666 Qi$ when purchased from the river. The upgraded Chaos Cthulhu costs 10 Sx$.
What does "250% better than your best fish" mean?
Instead of generating a static dollar amount per second, Cthulhu calculates its output by taking 250% of the income produced by your single highest-earning fish currently placed in your base.
Can you win Cthulhu from the Wheel of Fortune?
Yes. The Wheel of Fortune offers a 1% chance to land on Cthulhu. Players earn one spin ticket automatically for every 30 minutes of continuous play.
Does Cthulhu make money while stored in the Fish Vault?
No. Any fish stored inside the Fish Vault stops generating income. The vault is designed strictly for safe storage, rebirth preparation, and protection against base theft.
