Net A Fish Mutations: Order, Multipliers and How to Get Them

Last updated: November 9, 2026

Mutations add another attribute to your fish alongside species and rarity. Choose how to obtain them based on whether you want new catches, have duplicate fish to fuse, or want to change a fish already in a showcase.

Mutation Is Separate from Rarity

A fish can be Mythic and Shiny, like Shiny Moonveil Jellyfish, or Demigod and Gold, like Gold Titan Mantis Shrimp. The mutation does not replace its species or rarity.

The normal fusion ladder runs in this order:

Shiny → Gold → Crystal → Glitched → Rainbow → Starlit

Use this order to identify the next fusion tier. Open Fish Cooler to work with duplicate stacks; the fusion guide covers the recipes and Fuse All operation.

Haunted is an additional Halloween variant. A Haunted River Minnow’s Cooler card displays MAX in place of a numbered fusion requirement. That label does not place Haunted above Starlit in the normal fusion ladder.

Known Mutation Multipliers

Mutation	Catch-result modifier
Shiny	×1.15
Gold	×1.25
Crystal	×1.35

Crystal has the largest modifier of these three when other conditions are equal, followed by Gold and Shiny. These are mutation modifiers on catch results, not multipliers to apply to your total showcase income.

For an actual showcase choice, compare the individual fish’s income or placement preview in the same interface. Size and configuration matter alongside mutation. For example, one Cooler configuration lists Gold Bone Pike at $2,345/s while Shiny Bone Pike shows a best value of $3,983/s. In that comparison, the Shiny individual offers more income despite its lower mutation tier.

Catch-result income and placement or showcase income can include different boosts. Use the placement preview when deciding which fish should occupy a showcase.

Choose a Mutation Method

Improve new catches

Use catch bonuses when you want mutated fish while continuing to collect new species or duplicates.

Option	Effect	Requirement or action
Mutation Magnet	Increases mutation luck by 0.5 percentage points per level across Levels 1–10, reaching +5% at Level 10	Buy it under Upgrades → Fishing
Glitter Lure	Greatly increases mutation chance	Unlock at Captain, Rebirth 6, then buy and equip it in the Bait Shop
Mutation Hunter	×2 mutation chance	Own the game pass
Index page rewards	Permanent +1% mutation chance per completed page claimed	Complete a page and claim its reward
Shimmer skill	+5% mutation luck at Level 1; +10% at Level 2	Learn Lucky Waters first in the Luck branch; learning Shimmer and upgrading it to Level 2 each cost 1 Skill Point

Mutation Magnet is a direct cash investment for a mutation-focused fishing goal. See Fishing upgrades for its place among other upgrade choices.

After buying Glitter Lure, select Use so it shows IN USE. Each cast consumes one bait, making it useful for a focused mutation-catching session. The bait guide covers buying, equipping and other bait choices.

Claim completed Fish Index pages for a lasting bonus. If you are spending Skill Points specifically on mutation luck, work toward Shimmer through the Luck branch.

Fuse duplicate fish

Choose fusion when you already have duplicate stacks of a species you want to improve. Open Fish Cooler and use its fusion options to advance through the mutation ladder. This gives repeated catches a purpose beyond selling them. Follow the fusion recipes to prepare the correct stack for the next tier.

Change a showcase fish

Choose Mutation Reroll when you want to change the mutation of a fish already in a showcase. A reroll can improve its tier, leave it unchanged or downgrade it.

Use Mutation Lock when preserving the current tier matters: it prevents a downgrade on the next reroll and is automatically consumed by that reroll. It does not guarantee an upgrade. The Pearl Shop tools guide gives the purchase and use instructions, full outcome probabilities and protection details.

Glitter Lure marked IN USE in the Bait Shop, with mutation luck listed for the next cast.

Use Mutation Events

Fish during an active mutation event to take advantage of its specific bonus.

Event	Mutation benefit	When to use it
Shimmer Surge	×3 mutated fish	Prioritize catching while the event is active
Wave Rush: Extreme wave	×10 mutations, alongside ×10 rare fish and ×3 fish quantity	Applies to wave 3/3 in the three-wave configuration
Halloween Witching Hour	×3 Haunted fish appearances for 3 minutes	Fish during the event when targeting Haunted variants

Read the current Wave Rush banner before planning around its bonus: different waves and configurations have different effects. The ×10 mutation bonus is tied to the Extreme wave described above.

Treat each event’s displayed bonus as its own effect; do not multiply these labels together with pass and upgrade bonuses to calculate a final mutation probability.

See river events and server boosts for other event effects, or Halloween and Witching Hour for Haunted fishing opportunities.