Fish It Mutations Guide 2026: Ultimate Rarity Tier List!

Written By: John
Updated On: April 13th, 2026

There’s something magical about reeling in a fish that glows with otherworldly energy. If you’ve spent any time in Roblox Fish It lately, you know that catching mutated fish has become the ultimate bragging right. These shimmering, glowing, and sometimes terrifying variants aren’t just cosmetic – they can multiply your fish value by staggering amounts.

I’ve spent hundreds of hours across 2026 testing every enchantment, fishing spot, and weather condition to bring you the most accurate mutation data available. This guide covers everything from the common Stone mutation you’ll see daily to the legendary Galaxy variant that can make you server-famous overnight. Whether you’re hunting for your first Albino or chasing the elusive Leviathan’s Rage, this Fish It Mutations Guide has you covered.

What Are Fish It Mutations Anyway?

Mutations in Fish It are special visual overlays that appear on fish when you reel them in. Unlike regular catches, mutated fish sport unique effects like golden auras, ghostly transparency, or crackling electricity. Each mutation carries its own rarity percentage and value multiplier, making them highly sought after for both collection and trading purposes.

Here’s where many players get confused: mutations are completely separate from attributes. A fish can have both a mutation AND attributes like Shiny, Big, or Sparkling simultaneously. Attributes are passive buffs that affect stats, while mutations are visual rarities that boost selling price. You might catch a Big Shiny Gold fish – that’s a fish with the Big attribute, Shiny attribute, AND Gold mutation all stacked together.

Only one mutation can exist on a fish at a time. The game rolls for mutations independently of attributes, meaning your odds aren’t competing between the two systems. When you see that telltale glow around your catch, you know RNG has blessed you with something special.

Complete Fish It Mutations Rarity Tier List

I’ve compiled the definitive tier list based on current game data and community verification. These percentages represent your base chance before any enchantments or bonuses are applied. The mutation system uses true random number generation, so these rates are exact – not estimates.

Common Mutations (1.4-2.5% Chance)

These mutations form the backbone of the mutation economy. While they appear relatively frequently, they still add significant value to your catches and are perfect for building starting capital.

Albino (2.5%): Pure white appearance with no other coloring. Clean aesthetic that appeals to collectors who prefer minimalist displays. Value multiplier: 1.5x
Festive (2.2%): Holiday-themed coloration with red and green accents. Seasonal appeal makes these trade well during event periods. Value multiplier: 1.6x
Frozen (2.0%): Ice crystal effects with blue-white shimmer. Synergizes with snow weather for extra visual appeal. Value multiplier: 1.7x
Stone (1.4%): Rocky, solid gray texture that looks like carved granite. Great for new players learning mutation mechanics. Value multiplier: 1.4x

Don’t dismiss these common Fish It mutations just because they show up more frequently. A Stone mutation on a high-value fish like the Abyssal Dragon can still fetch impressive prices. I personally built my first million selling Frozen mutations during winter events.

Rare Mutations (1.0-1.2% Chance)

This tier represents the sweet spot between accessibility and value. These mutations turn heads without requiring weeks of grinding to obtain.

Gold (1.2%): Shiny golden glow that catches light beautifully. The go-to mutation for beginners looking to trade up. Value multiplier: 2.0x. This mutation pairs exceptionally well with the Gold Digger enchantment.
Ghost (1.0%): Semi-transparent body with a haunting ethereal aura. Collector favorite for ghost-themed aquarium displays. Value multiplier: 2.2x. The transparency effect looks stunning when viewed underwater.

Gold mutations serve as the primary currency in early trading. If you’re just starting your mutation hunting journey, aim for these first. They’re valuable enough to trade for better rods but common enough that you’ll catch several per week with proper enchantments.

Very Rare Mutations (0.5-0.9% Chance)

This is where serious collectors separate from casual players. Landing any of these mutations feels like a genuine achievement, and they command premium prices in trading circles.

Radioactive (0.9%): Sickly green glow with pulsing toxic particles. Looks incredible at night and in dark underwater caves. Value multiplier: 2.8x. The particle effects are some of the most detailed in the game.
Lightning (0.8%): Crackling electric streaks that arc across the fish’s body. Features dynamic animation during the catching minigame. Value multiplier: 3.0x. My personal favorite purely for the visual spectacle.
Color Burn (0.71%): Fiery scorched appearance with ember-like edges. Very distinctive look that’s easy to identify from a distance. Value multiplier: 2.5x. Works well with lava zone fishing themes.
Midnight (0.7%): Deep black body with subtle purple shimmer. Difficult to photograph well but stunning in person. Value multiplier: 3.2x. The shimmer intensity increases during night fishing.
Fairy Dust (0.6%): Sparkly pastel particles that float around the fish. Creates a magical, whimsical appearance. Value multiplier: 3.5x. Extremely popular with younger players and aesthetic collectors.
Gemstone (0.5%): Crystalline structure that resembles precious gems. Light refracts through the body creating rainbow patterns. Value multiplier: 4.0x. One of the most beautiful mutations when viewed up close.

I’ve landed exactly three Lightning mutations in six months of active play. That should give you perspective on how rare these truly are. When you catch one, screenshot it immediately – these are portfolio pieces for your collection.

Ultra Rare Mutations (0.5% Chance)

The absolute pinnacle of mutation hunting. Catching one of these will make you temporarily famous in your server. Players will teleport from other islands just to see these beauties.

Corrupt (0.5%): Glitchy dark textures with corrupted data effects. Digital horror aesthetic that’s unique in the mutation lineup. Value multiplier: 5.0x. Appeals to players who prefer darker themes.
Galaxy (0.5%): Deep space appearance with twinkling star particles. The most sought-after mutation in the game. Value multiplier: 6.0x. Some collectors value this higher than any fish rarity.

Galaxy mutations are so rare that some newer players don’t believe they exist until they see one. I watched a server explode with messages when someone caught a Galaxy Abyssal Dragon last month. The screenshot made the rounds on Discord for days.

Special Event Mutations

Beyond the standard mutation pool, Fish It occasionally introduces limited-time mutations through seasonal events. These often have unique acquisition methods and can become legacy items after events end.

Leviathan’s Rage: Deep sea-themed mutation with blood-red aura and violent particle effects. Introduced in a major 2026 update. Available through deep ocean fishing with special rods. Value multiplier: 4.5x
Crystalized: Sharp geometric ice formations covering the fish body. Creates a prismatic light effect. Found in frozen zones during winter events. Value multiplier: 3.8x
Sandy: Beach-themed with sand particle effects and tan coloration. Available through coastal fishing during summer events. Value multiplier: 2.0x
Coral: Pink-orange reef patterns with small coral growths. Has a 100% drop rate in Coral Bastion when using the Coral Spear. Value multiplier: 2.5x. One of the only mutations you can target-farm.
Eerie: Halloween-exclusive mutation with ghostly green fog and shadow effects. Only available during FischFright events. Value multiplier: 3.5x. Check our FischFright 2 event mutations guide for full details.
Frightful: Dark Halloween mutation with screaming face illusions. The rarest seasonal mutation available only during specific Halloween activities. Value multiplier: 4.0x. See our Halloween update with new mutations coverage.

Blessed and Cursed Mutations

These special mutation categories operate on different mechanics than standard mutations. Blessed mutations require specific quests and items to obtain, while Cursed mutations typically appear during Halloween events with inverted visual effects.

Blessed mutations feature angelic golden-white auras and are considered status symbols among high-level players. Unlike regular mutations, they cannot be obtained through normal fishing RNG. Instead, you must complete special objectives. Our dedicated Blessed mutation guide covers the exact steps to obtain these prestigious variants.

How to Boost Your Mutation Chances

Raw RNG will only get you so far. To seriously hunt mutations, you need to stack every possible advantage. Here’s the complete strategy breakdown.

Best Enchantments for Mutation Hunting

Enchantments are the single biggest factor in mutation rates. Prioritize these in order:

Mutation Hunter II: +30% mutation chance. The gold standard for serious hunters. Expensive to apply but absolutely worth the investment. With this enchant, a 0.5% Galaxy mutation becomes 0.65% – a significant improvement over time.
Cursed I: -75% luck but +75% mutation chance. High risk, high reward playstyle. You won’t catch as many total fish, but the ones you catch have dramatically better mutation odds. Best used when specifically targeting mutations rather than filling your inventory.
Mutation Hunter I: +10% mutation chance. Budget option for newer players. While not as powerful as level II, it’s much more affordable and still provides noticeable improvement.
Gold Digger I: 10% chance for Gold mutation specifically. If you’re building trading capital or want Gold mutations for a collection, this is your best bet.
Perfection: 5% transcendence chance (rare enchantment that affects appraisal). When combined with Transcendence stones, this can upgrade your mutated fish to even rarer variants. See our Fabulous Rod guide for rods that work well with this enchant.

Some special rods like the Spooky Rod come with built-in mutation bonuses that stack with enchantments. Check our Spooky Rod quest guide if you want to maximize your mutation hunting setup without relying purely on enchant stones.

Weather and Time Conditions

Environmental factors stack multiplicatively with your enchantments. Here’s what the data shows:

Night fishing: Community testing consistently shows higher mutation rates after sunset. Combine with the Stargazer enchantment for +60% luck at night. Full moon nights appear to have even higher rare mutation rates based on player reports.
Rainy weather: Storm conditions enable the Stormhunter enchantment, providing +80% luck during precipitation. If you see storm clouds forming, grab your rod immediately.
Snow weather: Perfect for catching Frozen mutations. The weather seems to slightly boost specific mutation types that match the environment.

Best Fishing Spots for Mutations

Location matters for mutation hunting. Different zones have different advantages:

Esoteric Depths: Highest enchant stone drop rate at 1 in 1000. Essential if you’re constantly rerolling enchantments.
Kohana Volcano: Excellent for combining rare fish catches with mutation opportunities. High-tier fish with mutations sell for massive amounts.
Coral Bastion: Guaranteed Coral mutation when using the Coral Spear. The only location where you can force a specific mutation type.
Ancient Jungle: Recent updates suggest possibly adjusted mutation rates in newer zones. Worth testing if you’ve exhausted other locations.

Mutation Appraisal Guide

A critical decision every mutation hunter faces: should you appraise your mutated fish or keep it as-is? Appraisal can potentially upgrade your mutation to a rarer tier, but it also risks downgrading or removing the mutation entirely.

The Transcendence stone is the primary tool for mutation appraisal. When used with the Perfection enchantment (5% base transcendence chance), you have a small opportunity to upgrade your mutation. However, this is extremely risky with rare mutations – many players regret appraising their Galaxy fish only to end up with a common Stone variant.

My recommendation: only appraise common mutations like Stone or Albino. If you catch a very rare or ultra rare mutation, keep it untouched. The risk of losing a 0.5% Galaxy mutation far outweighs the small chance of upgrading it to something even better (which may not exist for that fish).

Common Mutation Hunting Mistakes (I Made These!)

Let me save you months of frustration by sharing the biggest errors I committed when starting out:

Fishing without enchantments: I wasted my first week catching hundreds of fish with zero mutations because I didn’t understand the enchantment system. Even Mutation Hunter I makes a massive difference.
Confusing attributes with mutations: I thought Shiny fish were mutated for the longest time. Shiny is an attribute that affects stats, not a mutation that affects value. Learn the difference early.
Selling mutations too quickly: I sold my first Gold mutation for 10k when it was worth 50k+. Check trading Discords and recent sales before accepting offers.
Not using the right rod: Higher tier rods have better base mutation rates. That starter rod you’re attached to is holding you back. Upgrade as soon as possible.
Fishing in crowded servers: Personal observation suggests less competition correlates with better drop rates. Try private servers or less populated times.
Appraising rare mutations: I watched a friend lose a Ghost mutation to appraisal. Never appraise anything rarer than Festive unless you’re willing to lose it.

Mutation Value and Trading Guide

Understanding exact mutation multipliers is essential for trading and selling. Here’s the complete breakdown of what each mutation adds to your fish value:

Complete Mutation Value Multiplier Table

These multipliers stack on top of your fish’s base value. A 10k fish with a Galaxy mutation (6.0x) sells for 60k.

Stone: 1.4x base value
Albino: 1.5x base value
Festive: 1.6x base value
Frozen: 1.7x base value
Sandy: 2.0x base value
Gold: 2.0x base value
Ghost: 2.2x base value
Coral: 2.5x base value
Color Burn: 2.5x base value
Radioactive: 2.8x base value
Lightning: 3.0x base value
Midnight: 3.2x base value
Fairy Dust: 3.5x base value
Eerie: 3.5x base value
Crystalized: 3.8x base value
Gemstone: 4.0x base value
Frightful: 4.0x base value
Leviathan’s Rage: 4.5x base value
Corrupt: 5.0x base value
Galaxy: 6.0x base value

Remember that attributes like Big, Shiny, and Sparkling multiply separately from mutations. A Big Shiny Galaxy fish could easily reach 15-20x total value multiplier. These are the catches that fund entire rod collections.

Trading Strategies

The Fish It trading community operates on supply and demand principles that change weekly. Here’s what’s currently valuable:

Galaxy and Corrupt mutations are the premium currency. They’re traded for other ultra-rares, high-tier rods, or massive C amounts. Never quick-sell these.
Gold mutations serve as the standard trading unit. They’re valuable enough to be meaningful but common enough that most players can acquire them. Perfect for building up to better trades.
Holographic mutations appeal to visual collectors. While not the rarest, the color-shifting effect makes them popular for showcase collections.
Event mutations (Eerie, Frightful, Sandy) gain value after their events end. Limited availability drives up prices in the months following the event.
Always screenshot your mutations with the fish name visible before trading. Scammers occasionally try to substitute lower-tier mutations.
Check rarity before trading. A Gold mutation on a common fish might be worth less than a Stone mutation on an ultra-rare fish. Base fish value matters as much as the mutation itself.

Frequently Asked Questions

What are all the mutations in Fish It?

Fish It currently has 16+ mutations across multiple rarity tiers. Common mutations include Stone (1.4%), Albino (2.5%), Festive (2.2%), and Frozen (2.0%). Rare mutations include Gold (1.2%) and Ghost (1%). Very rare mutations include Radioactive (0.9%), Lightning (0.8%), Midnight (0.7%), Fairy Dust (0.6%), and Gemstone (0.5%). Ultra rare mutations include Corrupt (0.5%) and Galaxy (0.5%). Special event mutations like Leviathan’s Rage, Crystalized, Sandy, Coral, Eerie, and Frightful have varying availability and drop rates.

What is the rarest mutation in Fish It Roblox?

As of 2026, Galaxy and Corrupt mutations are tied for the rarest standard mutations at 0.5% base drop rate. However, seasonal mutations like Frightful from Halloween events may be technically rarer due to limited availability windows. Some players also consider Leviathan’s Rage among the rarest due to its specific deep ocean requirements. The rarest mutation you’ll actually see depends on when you’re playing and what events are active.

How to get mutations in Fish It?

Mutations spawn randomly when you catch fish based on percentage chances. To increase your odds, use enchantments like Mutation Hunter II (+30% mutation chance), fish at night when rates are higher, use rods with good base stats, and consider the Cursed enchantment (+75% mutation chance, -75% luck). Some special mutations like Coral have guaranteed drops in specific locations with specific gear. Event mutations require participating in seasonal activities.

What are the chances of getting a mutation in Fish It?

Base mutation chances range from 2.5% for Albino (most common) down to 0.5% for Galaxy and Corrupt (rarest). Most mutations fall between 0.5% and 2.5% chance. These percentages can be improved through enchantments like Mutation Hunter I (+10%) or Mutation Hunter II (+30%). With maximum enchantments and optimal conditions, a 0.5% Galaxy mutation can become roughly 0.8% or higher.

How do you get shiny fish in Fish It?

Shiny is actually an attribute, not a mutation. Shiny fish are caught through normal fishing RNG separate from the mutation system. A fish can be both Shiny AND mutated simultaneously. Shiny affects fish stats while mutations affect visual appearance and sell value. There’s no specific enchantment for Shiny fish – they’re pure luck. Don’t confuse Shiny fish with mutations like Gold or Galaxy.

What is the best mutation in Fish It?

Galaxy is generally considered the best mutation due to its 0.5% rarity, stunning visual effects, and 6.0x value multiplier. However, the best mutation depends on your goals. For trading, Galaxy and Corrupt are top-tier. For profit on common fish, Gold (2.0x) is reliable and obtainable. For visual appeal, Lightning and Fairy Dust are fan favorites. Event mutations like Frightful become the best after events end due to scarcity.

How to increase mutation chance in Fish It?

Stack multiple bonuses: use Mutation Hunter II enchantment (+30%), fish at night (higher base rates), equip high-tier rods, consider Cursed enchantment for dedicated mutation farming (+75% mutation chance), use specific baits that boost mutation stats, and fish in recommended spots like Esoteric Depths. Some game passes also provide permanent mutation chance increases. Check the in-game shop for current offerings.

What is Leviathan’s Rage mutation?

Leviathan’s Rage is a special deep-sea mutation introduced in 2026 featuring a blood-red aura and violent particle effects. It has approximately a 4.5x value multiplier and can only be caught in deep ocean zones, typically requiring advanced rods and specific depth conditions. Unlike standard mutations, it has thematic ties to the Leviathan boss fish and is considered a mid-tier rare mutation between common Gold and ultra-rare Galaxy.

Can you stack mutations in Fish It?

No, you cannot stack multiple mutations on a single fish. The game only allows one mutation per fish. However, you CAN stack mutations with attributes. A fish can have one mutation (like Galaxy) plus multiple attributes (like Shiny, Big, and Sparkling) all at once. This is why you’ll see players showing off Big Shiny Galaxy fish – they’re displaying the rarest possible combination of one mutation plus multiple attributes.

Do mutations affect fish behavior?

No, mutations are purely cosmetic and affect only visual appearance and sell value. They don’t change how fish fight during the catching minigame, how they behave underwater, or any other gameplay mechanics. However, some mutations like Lightning have impressive visual effects during the catch sequence that make reeling them in more exciting. The fighting difficulty depends on the fish species, not its mutation.

Can you increase mutation chances with game passes?

Yes, several game passes provide permanent bonuses to mutation chances. The Mutation Hunter game pass is the most direct option, providing a flat percentage increase to all mutation rolls. Additional luck boosters and fishing efficiency passes can indirectly improve mutation rates by increasing your overall fishing speed and success. Check the in-game Robux shop for current game pass offerings as they rotate periodically.

What’s the best time of day to catch mutations?

Night time consistently shows higher mutation rates across all player reports and community testing. The Stargazer enchantment provides +60% luck specifically at night, making it the optimal choice for evening fishing sessions. Full moon nights appear to have even higher rates for rare mutations, though this may be anecdotal. Combine night fishing with rain weather and Stormhunter enchantment for maximum effect.

How often do new mutations get added to Fish It?

Based on the game’s update history through 2026, new mutations are typically added every 4-6 weeks during major content updates. Seasonal events like Halloween (FischFright) and Summer introduce temporary mutations that may become permanent later. The development team is quite active, so following the official Fish It Twitter or joining the Discord server will keep you informed about upcoming mutation releases.

Should I appraise a mutated fish?

Only appraise common mutations like Stone or Albino. Never appraise rare, very rare, or ultra rare mutations like Ghost, Lightning, or Galaxy. Appraisal uses Transcendence stones to reroll your mutation, which can upgrade OR downgrade the result. The risk of losing a 0.5% Galaxy mutation to become a 1.4% Stone mutation far outweighs the small chance of improvement. Keep rare mutations exactly as you caught them.

Stay Updated on Fish It Mutations

The Fish It development team maintains an aggressive update schedule with new content arriving monthly. To ensure you never miss new mutations or balance changes:

Follow the official Twitter: @FishitROBLOX posts update announcements and occasional mutation teasers
Join the Discord server: Real-time mutation discoveries and trading discussions happen here first
Bookmark this guide: I update it regularly as new mutations are discovered and percentages are adjusted
Check the Fandom wiki: Community-maintained resource with visual examples and community-verified data

Final Thoughts

Mutation hunting in Fish It taps into that primal collector instinct. There’s genuine excitement in watching a fish emerge from the water wrapped in lightning or glowing with galaxy dust. The RNG system ensures that every cast carries possibility – even after hundreds of hours, that next mutation could be your first Galaxy.

Success requires patience more than anything else. I’ve had droughts lasting days followed by sessions where I caught three rare mutations in an hour. The randomness is what makes each find meaningful. Keep your Mutation Hunter II enchant active, fish during optimal conditions, and celebrate every mutation – even the common ones.

If this Fish It Mutations Guide helped you understand the system better, consider sharing your own catches in the community. Every player discovers something new, and collectively we build better strategies. Tight lines, and may your next reel bring that Galaxy mutation you’ve been chasing!

John

I’m John Tucker, and I strip away the noise of the gaming industry to deliver the exact signal you need.

Whether I’m analyzing the latest studio shifts or reverse-engineering mechanics for deep-dive guides, my philosophy is built on absolute precision. I don’t do generic walkthroughs or aggregated rumors. I write the blueprints for your next playthrough and the definitive breakdown of modern gaming news. No filler. Just strategy and truth.