There are a lot of rare mutations and curious fish to catch if you know where to look in Fisch. But, of course, you will have to be prepared, finding the right spot and bait if you want to avoid wasting a lot of time. So, let's see how to catch the subspace fish mutation in Fisch and the basic info you need.
There is no specific place to find this kind of fish, as mutations in Fisch can indeed appear everywhere in the map. If you are looking to make this Subspace mutation quite more common, you will need to possess a specific exalted enchantment, the Quantum. Once it is applied to your rod, Subspace mutations will appear with around 25% probability.
But how can you get your hands on the Quantum mutation?
If you want to get your hands on the Quantum enchantment, first, you need an Exalted relic. But, alas, they are pretty rare. There is a 1/2000 chance of being found; you can try to use the Rod Of The Exalted One to make things a bit easier. If you have not completed the Keepers Secret puzzle, you will get three Exalted Relics as a reward.
Once you have an Exalted relic (or any relic at all), you can enchant your rod by going to the Statue of Sovereignty. Talk to the NPC there, Cole, and give him the amount (400C$) he wants. Now, ride the elevator to the bottom to get to the Altar. Now, once down, walk to the pedestal and interact with the Altar but keep in mind that this will only work during the night.
If you have a rod with an Exalted enchantment, bring it with you as that will make your chance of rolling another Exalted enchantment a bit higher. But, on average, exalted enchantments have a 1 in 7 chance of being rolled. The process will exhaust the relic while applying a random enchantment to your currently equipped rod.
The Subspace mutation first appeared in Fisch in version 1.13, released on the Roblox platform in early January 2025. You can recognize a Subspace fish by looking at the color, if it is a slightly faded bright red color while sparkling with pink particles, then you have found one. This mutation will make any fish value greater by five times, making it one of the best ways to earn money fast, second only to the quite rare and difficult-to-get Aurora mutation.