Stumped on how to open a certain door? It seems like a bit of a catch 22. Fortunately, we have some useful advice for you in our guide on how to get the Crimson mutation in Fisch. This will help you get the mutation, even if you haven’t opened the gate yet.
You can play Fisch now on Roblox. We’ve got all the latest from the weekend’s new content in our Fisch update guide, too.
How To Get The Crimson Mutation In Fisch
What Is The Crimson Mutation?
The Crimson mutation is a beneficial mutation that can effect fish. It gives them a red color when caught, held, or displayed in an aquarium. Possibly more importantly, it increases their sale value 600%, so a fish worth 1000C$ will be worth 6000C$ with the Crimson mutation applied.
How To Get The Crimson Mutation
As of writing this guide, there are currently three ways to get the Crimson mutation.
Scarlet Spincaster
The Scarlet Spincaster fishing rod is the most reliable way to get the Crimson mutation. In fact, catches with the rod have a 30% chance to be Crimson. Of course, the downside to this is you do have to get the rod itself, which you can pick up from the Crimson Cavern for 200,000C$.
Crimson Cavern
The Crimson effect does leak into the waters of the Crimson Cavern. This location opens up by completing the Crimson Guard’s quest, getting a Crimson Collossal Blue Dragon. There’s a small chance that anything caught in the Crimson Cavern will be Crimson.
Appraiser
The Appraiser in Moosewood has a tiny chance (0.11%) to give any catch you appraise the Crimson mutation. This is the only way to get the Crimson mutation without access to the Crimson Cavern, so necessary for completing the Crimson Guard’s quest.



