All Traits and Mutations in My Fishing Brainrots

All Traits and Mutations in My Fishing: Full Multiplier List

Every catch in My Fishing can roll two independent modifiers: a trait, which describes the condition or quirk of the fish, and a mutation, which is a rare visual and value variant. Only one trait and one mutation can occupy a fish at a time, they multiply together rather than adding, and the trait multiplier is applied before the mutation multiplier. That multiplication order matters: a 1.4x trait combined with a 2.5x mutation does not give a 3.9x fish, it gives a 3.5x fish.

Trait List with Value Multipliers

Traits are the common roll. Roughly four out of five catches come up with no trait at all, which is the game’s baseline value. When a trait does land, the multiplier below is applied to the fish’s base sell price before any mutation is factored in. These figures reflect the tier bands used in the game’s current value tables; minor rebalances between patches most often hit the bottom two tiers, so treat T1 and T2 as the shakiest numbers on this page.

How to read the trait table without overpaying attention to it

The spread between the worst trait (1.10x) and the best (2.75x) is 2.5x, but traits are the small half of the equation. A T1 trait on a legendary-rarity fish is worth more in absolute coins than a T5 trait on a common one, because traits scale a base price that starts much higher. If you are only going to memorise one thing from this page, memorise the mutation tiers instead — they swing the final number far harder.

Mutation List with Value Multipliers

Mutations are the rare roll and the reason people keep fishing long after they’ve filled the collection. Per the game’s official patch notes, mutation chances are checked independently of trait chances, so a fish can and does roll both. The base mutation odds sit around 1 in 50 per catch, with the rarer colour and material variants nested inside that pool.

The one rule that decides keep or sell

Multiply, don’t add. A “Brainrot” fish (15x) with no trait beats an “Ancient” trait fish (2.25x) with “Obsidian” (3.00x) — the latter lands at 6.75x against the former’s flat 15x. The absolute ceiling, a “Mythic-quirked” trait on a “Brainrot” mutation, resolves to 2.75 × 15.00 = 41.25x base value, and those are the catches worth building storage space around.

Stacked Values at a Glance

Here is the same multiplication worked out for the combinations people ask about most, so you can skip the arithmetic. All figures are base price multipliers.

A worked example: is this catch worth keeping?

Say you hook a mid-tier fish with a base sell price of 1,200 coins, and it rolls “Sturdy” (1.45x) with “Tideworn” (2.00x). Multiply: 1,200 × 1.45 = 1,740, then 1,740 × 2.00 = 3,480 coins. Compare that against keeping the fish bare and selling it at 1,200 — the modifiers added 2,280 coins, which is roughly two extra catches of the same species. That’s a keep. Now run the same fish with “Pale” (1.15x) and no mutation: 1,200 × 1.15 = 1,380. That’s a 180-coin uplift, which is not worth a storage slot once you’re past your first few hours. The threshold most players settle on is a combined multiplier of about 1.8x or better before a fish earns permanent space.

Where the Multiplier Applies — and Where It Doesn’t

• Sell price: yes, multiplied in full.
• Collection completion: traits and mutations do not count as separate entries; they’re modifiers on an existing entry, so you don’t need to catch all 11 traits to finish anything.
• Quest turn-ins: most quests accept any version of the required fish, but a handful specify an unmodified catch. Check the quest text before handing over a good roll.
• Weight records: a mutation does not change the recorded weight, only the coin value, so a Prismatic personal best still displays the same kilogram figure.
• Trading: both modifiers carry over with the fish, which is why Brainrot catches move at multiples of their already-inflated sell price.

Common Mistakes When Judging a Catch

• Adding the modifiers instead of multiplying. A 2.25x trait plus a 3.00x mutation is 6.75x, not 5.25x — and players who add tend to undervalue exactly the fish that matter most.
• Selling on trait tier alone. A T1 trait sitting on a Voidtouched fish is still a 10.45x catch. Never judge a fish before you’ve read the mutation line.
• Assuming rarity means value. The rarest mutation is not always the best multiplier on a given fish if the base price is low. A Brainrot on a starter-tier fish can still lose to a Moonlit on a legendary.
• Clearing storage too eagerly. Because 1.8x is the usual keep threshold, mid-tier combinations like Sleek + Embered (2.78x) get thrown away during early-game inventory pressure and are annoying to re-farm later.
• Chasing traits over mutations. You can re-roll into a trait far more often than you can re-roll into a mutation, so mutation odds are the real constraint on your collection.

Frequently Asked Questions

Can a fish have both a trait and a mutation at the same time?

Yes. Trait and mutation rolls are checked independently, so a single catch can carry one of each. When both are present the game multiplies the two values together rather than adding them, which is why stacked catches climb so quickly in price.

What is the rarest mutation in My Fishing?

Voidtouched is the rarest of the standard mutation set at roughly 1 in 22,000 catches with a 9.50x multiplier. Brainrot is rarer still at around 1 in 60,000, but it sits in its own tier above the standard set rather than inside it, so most players list Voidtouched as the rarest standard roll.

Is a high-tier trait better than a low-tier mutation?

Almost never. The best trait tops out around 2.75x while even the easiest mutation starts at 1.35x and the top ones run to 15x. A Frostbitten mutation alone (1.50x) outvalues a Vicious trait (1.90x) only when paired with a strong trait, so the mutation line is usually the deciding factor.

Should I sell a fish with a low trait and no mutation?

Generally yes, once you’re past the early game. Anything landing under roughly 1.8x combined multiplier frees up a storage slot for a better catch, and low-tier fish are easy to re-farm later if a quest needs one.

Do traits and mutations affect fish weight or quest requirements?

They do not change the recorded weight — a mutated personal best still shows the same kilogram figure. Most quests accept any version of the required fish, but a small number specify unmodified catches, so read the quest text before turning in a strong roll.

What is the highest possible multiplier in the game?

The ceiling is a Mythic-quirked trait on a Brainrot mutation, which multiplies out to 41.25x base value. Second place is Mythic-quirked on Voidtouched at 26.13x, and those two combinations are the only ones that clear 25x.