Fisch AlmanacRoblox field guide

Complete Mutations Guide — Every Mutation Type in Fisch Roblox

Verified from wiki data · August 2026

Mutations are powerful modifiers that change a fish's appearance and dramatically increase its sell value. Understanding how mutations work — and how to farm them — is the key to maximizing your C$/hour in Fisch Roblox.

Key rule Each fish can only have one mutation (Atlantean, Golden, Phantom, etc.), but attributes (Shiny, Sparkling, Glitched, size) stack on top of mutations. A Shiny Atlantean fish multiplies both bonuses together for massive value.

How Mutations Work

When you catch a fish in Fisch, it has a chance to spawn with a mutation. Mutations modify the fish's sell value by applying a multiplier to its base price. The mutation system has two layers:

MutationsOne per fish. Changes type prefix (e.g., "Atlantean Megalodon"). Applies a value multiplier.
AttributesStack with mutations. Shiny (1.85x), Sparkling (1.85x), Glitched (0x joke), Size variants.
StackingMutation × Shiny × Sparkling = final multiplier. All multiplicative.
AppraisalSome mutations can only be obtained via the Appraiser NPC (Purified, Crimson).

Example: A base 10,000 C$ fish with Atlantean (4x) + Shiny (1.85x) + Sparkling (1.85x) = 10,000 × 4 × 1.85 × 1.85 = 136,900 C$. That's nearly 14x the base value from stacking alone.

Mutation Multiplier Table

All known mutations ranked by their sell value multiplier. Higher is better for profit.

MutationMultiplierSourceNotes
Atlantean4.0xTrident Rod, Abyssal enchantBest overall — highest multiplier
Golden3.0xGolden Rod, Golden Hour weatherEasier to farm than Atlantean
Phantom2.5xPhantom Rod, Eclipse weatherStacks with dark-themed fish
Wrath2.5xWrath Rod, Blood Moon weatherAggressive visual effect
Sunken2.0xDeep sea locations, AppraisalCommon in deep-sea zones
Purified2.0xAppraisal onlyCannot be caught directly
Crimson2.0xAppraisal, Blood MoonRed visual overlay
Frozen1.75xIce locations, Blizzard weatherCommon at Snowcap, Frostbite
Mosaic1.5xRandom, low chanceMulticolor pattern — purely cosmetic bonus
Important These multipliers apply to the fish's base sell value before attributes (Shiny/Sparkling) are calculated. The final value = Base × Mutation × Shiny × Sparkling.

Attributes — Shiny, Sparkling, Glitched & Size

Attributes are separate from mutations and stack multiplicatively. A single fish can be Shiny + Sparkling + have a mutation simultaneously.

Value-Affecting Attributes

AttributeMultiplierBase ChanceHow to Boost
Shiny1.85x~1%Destiny Rod (+10%), Blessed enchant (+5%), Shiny Surge weather
Sparkling1.85x~0.5%Stacks with Shiny. Same boost sources apply.
Glitched0x (joke)Extremely rarePurely cosmetic trophy — sells for 0 C$

Size Variants

TinyVisual only — no value change. Smaller model.
SmallVisual only — no value change. Slightly below average.
BigVisual only — no value change. Larger model.
GiantVisual only — no value change. Maximum size variant.
Stacking math Shiny + Sparkling together = 1.85 × 1.85 = 3.4225x value. Add Atlantean mutation on top: 4 × 3.4225 = 13.69x total multiplier. This is the theoretical maximum value multiplier in Fisch.

How to Get Mutations

Mutations come from four main sources: rod passives, enchantments, weather events, and the Appraiser NPC. Here's the full breakdown.

Rod Passives

Certain rods have built-in mutation chances as passive abilities:

RodPassiveMutation
Trident Rod30% chanceAtlantean
Destiny Rod+10% Shiny chanceShiny (attribute)
Golden Rod25% chanceGolden
Phantom Rod20% chancePhantom
Wrath Rod20% chanceWrath
Frozen Rod15% chanceFrozen

Enchantments

Enchantments add mutation chances on top of rod passives. Apply them at the Enchanter NPC:

EnchantmentEffectTarget Mutation
Abyssal+20% Atlantean chanceAtlantean
Blessed+5% Shiny chanceShiny (attribute)
Gilded+15% Golden chanceGolden
Spectral+10% Phantom chancePhantom
Frigid+10% Frozen chanceFrozen

Weather Events

Weather conditions can boost or guarantee certain mutations:

Shiny SurgeMassively boosts Shiny chance for all catches. Farm aggressively during this.
RainbowIncreases Shiny and Sparkling rates. Stacks with rod bonuses.
Golden HourBoosts Golden mutation rates across all locations.
Blood MoonEnables Wrath and Crimson mutations. Rare night event.
EclipseEnables Phantom mutations. Very rare.
BlizzardBoosts Frozen mutation rates in cold zones.

Totems & Appraisal

Totems are consumable items that boost specific mutation chances when activated at a fishing spot. They last for a set duration and affect all catches during that window.

Appraisal (via the Appraiser NPC) is the only way to obtain Purified and some Crimson/Sunken mutations. You submit a caught fish and it has a chance to return with a mutation applied. Higher rarity fish have better appraisal odds.

Best Mutation Farming Setups

Optimized rod + enchantment combinations for each mutation type. Use the Loadout Builder to fine-tune your exact stats.

Atlantean (4x) — Maximum Profit

RodTrident Rod (30% Atlantean passive)
EnchantmentAbyssal (+20% Atlantean) = 50% total Atlantean chance
LocationAny high-value fishing spot (Ancient Isle, Volcanic Vents)
StrategyVolume fish — every other catch is Atlantean at 50%

Shiny + Sparkling (3.42x) — Attribute Stacking

RodDestiny Rod (+10% Shiny passive)
EnchantmentBlessed (+5% Shiny) = 16% Shiny chance total
WeatherWait for Shiny Surge or Rainbow events
StrategyCombine with Atlantean rod for the ultimate 13.69x combo

Golden (3x) — Consistent Mid-Tier

RodGolden Rod (25% Golden passive)
EnchantmentGilded (+15% Golden) = 40% Golden chance
WeatherGolden Hour for maximum rates
StrategyGood stepping stone before Trident Rod. Reliable income.

Hybrid Setup — Atlantean + Shiny

RodTrident Rod (30% Atlantean)
EnchantmentBlessed (+5% Shiny) — sacrifice some Atlantean chance for Shiny
WeatherShiny Surge + Rainbow for peak value
StrategyLower Atlantean rate but when Shiny hits on Atlantean fish: 4 × 1.85 = 7.4x
Pro tip Don't sell immediately during Shiny Surge events. Fish aggressively, bank your catches, and sell after confirming mutations via the Bestiary. Some mutations only reveal at sell time.

Frequently Asked Questions

What is the best mutation in Fisch?

Atlantean at 4x multiplier is the highest value mutation. Combined with Shiny + Sparkling attributes, a single fish can reach 13.69x its base value.

Can mutations stack with each other?

No — only one mutation per fish. However, attributes (Shiny, Sparkling) are separate and DO stack with your one mutation. So you can have an "Atlantean Shiny Sparkling Giant Megalodon" but not an "Atlantean Golden Megalodon."

How do I get Shiny fish?

Shiny has a base ~1% chance. Boost it with: Destiny Rod (+10%), Blessed enchantment (+5%), and Shiny Surge weather. During Shiny Surge, rates spike dramatically — don't miss these windows.

Is the Glitched attribute worth anything?

No. Glitched fish sell for 0 C$ — it's a joke/trophy attribute. Extremely rare but intentionally worthless. Keep them for bragging rights in your Bestiary.