Mutations in Deep Fishing significantly boost the value and earning potential of your fish while changing their appearance. For example, the Gold mutation gives fish a shiny golden look, while the Toxic mutation turns them an eerie radioactive green. Understanding these mutations can take your fishing game from average to exceptional.
Players often underestimate the value of these mutations, leading them to miss out on maximizing their profits. It’s important to know which mutations to prioritize, as they can really change the game with the right combinations. Avoid using your resources on lower-tier mutations; focus on getting the big hitters.
Before diving into catching fish, make sure to check for any ongoing weather events that could provide rare mutations. That can dramatically elevate your earnings, especially early on!
Since the Halloween update, there are nine distinct mutations in Deep Fishing, and I’ve put together a ranking system to help you focus on the most valuable ones. This tier list will guide you through what mutations provide the biggest bonuses, so aim for the top tiers when you’re capturing fish.
Ranking all Deep Fishing mutations
The only mutations that can naturally appear on random fish are Gold and Diamond. The rest depend on specific weather events to show up.
The mutations are ranked into the following tiers:
S tier: The best mutations that yield massive profits. Put them on your biggest catches and watch the money roll in. A tier: These mutations provide solid earning boosts and look great. B tier: Average mutations useful for making some quick cash. C tier: The least valuable mutations, don’t waste time on these if you can help it.
- S tier: The best mutations in this fishing simulator. Get them on your biggest and rarest fish and put them into the Pond to earn massive amounts of money every second.
- A tier: The second-best mutations. They give decent value and earning boosts to your fish, as well as stunning appearances.
- B tier: The average mutations. Sell fish with such mutations and use the acquired money to purchase better gear.
- C tier: The worst mutations due to their low multipliers. Roll for better ones after speaking to the Mutation Dealer on the starter island.
Now that you know the tier structure, here are the specific rankings of the mutations:
How to acquire the different mutations in Deep Fishing:
To benefit from mutations, you’ll want to understand how they work with the game’s selling price system. The Gold and Diamond mutations can spawn on fish regardless of the weather, thanks to the RNG mechanics in the game, while others depend on specific weather conditions.
Weather-dependent mutations include the following:
- Cosmic: Cosmic weather event
- Cursed: Cursed weather event
- Electro: Thunder weather event
- Frozen: Blizzard weather event
- Lava: Volcano weather event
- Toxic: Toxic weather event
- Wet: Rain weather event
If the weather isn’t cooperating, you can change a fish’s mutation by talking to the Mutation Dealer on the starter island. You just need to equip the fish, approach the Dealer, and use Mutation Rerolls to attempt to get a better mutation.
You can find Mutation Rerolls while fishing. If you’re looking to maximize your mutation quality, consider purchasing Ultra Rerolls, which increase your chances of higher-tier mutations with Robux.
Also check: All Baits in Deep Fishing
Frequently Asked Questions about Deep Fishing:
How many mutations are there? There are nine in total: Cosmic, Cursed, Diamond, Electro, Frozen, Gold, Lava, Toxic, and Wet.
There are nine mutations: Cosmic, Cursed, Diamond, Electro, Frozen, Gold, Lava, Toxic, and Wet.
Which mutations aren’t tied to weather? Only Gold and Diamond are unaffected by weather events.
Which mutation gives the highest bonus? Cosmic is at the top with a 15x multiplier.
What mutation gives the highest multiplier?
Cosmic is the best mutation, giving a 15x multiplier.




