The Lost Mutation in Fisch is a special alteration that can amplify the value of the affected fish while giving it an aesthetic shift. This Mutation is exclusive to The Lost Rod, a craftable fishing implement that can be made using early- to mid-game ingredients. As of this writing, it’s impossible to encounter the Lost Mutation naturally while fishing, making it fairly inaccessible.
Let’s go over the Lost Mutation in Fisch, exploring its acquisition method, multiplier, and the visual changes it applies.
An overview of the Lost Mutation in Fisch

As previously mentioned, the Lost Mutation is a unique Mutation that is exclusive to The Lost Rod. Upon a Perfect Catch, The Lost Rod has a 36% chance to apply this Mutation. This means that roughly once every three fish caught, you will catch a fish with the Lost Mutation. The Mutation causes the affected fish to shine a bright green.
The Lost Mutation applies a 4.5x value multiplier to the affected fish, which is fairly on-par with an early- to mid-game Mutation. Other Mutations, such as Harmonized, hover around the 3x to 5x multiplier range. What’s interesting is that on release, this Mutation had a notably higher multiplier associated with it, sitting at 5.5x. However, with the Mutation rebalancing that accompanied update 1.58, the multiplier was nerfed to its current value.
Outside of The Lost Rod, there are no other ways to get this Mutation. You can make this fishing rod by bringing the following items to the Ancient Archives:
- 3x Lapis Lazuli: Has a 4.1% chance of being acquired in a Meteor. May also be obtained from the Personal Aquarium.
- 3x Ancient Wood: Available in the waters around Sunstone Island as a Legendary-rarity catch.
- 1x Ancient Thread: Minute chance to be acquired through fishing anywhere. May be acquired through Treasure Chests and the Personal Aquarium as well.
There is no monetary requirement, so if you happen to have these items, you can get The Lost Rod immediately at the Ancient Archives. The Lost Rod is not particularly special at anything, barring the Mutation, so for general fishing purposes, you are better off relying on a mid-game rod instead.
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FAQs on Fisch
What does the Lost Mutation do in Fisch?
The Lost Mutation applies a 4.5x value multiplier to the affected fish while applying a bright green glow to it.
How do I get the Lost Mutation in Fisch?
The Lost Mutation can only be acquired through The Lost Rod, which has a 36% chance of applying it.
Is the Lost Mutation valuable?
The Lost Mutation is fairly valuable for an early- to mid-game player, and its value diminishes rather sharply the further you progress in the game.
Edited by Swapnil Joshi