Fish It All Mutations: Full List, Values & Best Picks

A full fish it all mutations breakdown matters because the sell value gap between a default catch and a Chroma stack is wider than most players assume — stacking Shiny x2 onto a Toxic x4 pull from a polluted zone is how a single cast turns into a paycheck. This list ranks every mutation from Normal baseline through Eternal, Void, Prismatic, Celestial, and Ascended tiers, maps the biomes that spawn Frozen, Electric, and 8-Bit variants, and flags which Chroma x7 combinations are actually worth farming over chasing Mythic rod rolls.

What Mutations Actually Do in Fish It

Mutations in Fish It are visual modifiers that attach to a fish the moment you reel it in, multiplying its base sell value, weight, or both at the same time. The base game on Roblox already advertises more than a million possible fish variations across every island, and mutations are the biggest single lever that turns a worthless 50-coin minnow into a 250,000-coin payday. According to the official Fish It Roblox page, the developer Fish Atelier rolls new mutation content into the game alongside each island update, with the Arcadia limited-time island and the recent 8-Bit mutation both expanding the pool.

Every mutation has three properties that matter: a Sell Multiplier (applied to the fish's base coin reward), an optional Weight Bonus (a percentage added to the fish's measured weight in kg), and a Rarity Weight that controls how often it spawns relative to other modifiers. Mutations are not tied to the fish species itself — a common Shrimp can roll the exact same Legendary mutation as a Forgotten Hydra, which is why understanding the modifier list matters more than chasing a single creature.

Players usually encounter mutations in three layers: passive mutations that fire on any cast under the right weather, time-of-day, or location conditions; event mutations that only appear during a server-wide announcement; and potion-induced mutations that activate when you pop a Mutation Potion from your inventory. If you want a deeper breakdown of the high-end side of this system, the rare mutations breakdown walks through the event and potion paths in more detail. For everything below, the goal is to give you a complete fish it mutation list with sell-value context, so you can decide which modifier to fish for on any given cast.

The Complete Fish It Mutation List and Values

Below is a consolidated mutation list covering every modifier currently reported by the community. Values are community-sourced and reflect the sell multiplier and the weight bonus applied to a base fish; actual payout will scale with the underlying species. Use this table as a quick reference for any fish it all mutations lookup, then dig into the tier ranking further down the page.

The base Normal modifier is the default state of every catch, so it is what you compare everything else against. From there, the passive mutations (Shiny, Glow, Mossy, Sandy) and weather-locked modifiers (Frozen, Electric, Toxic) act as your everyday multipliers. The real money lives in the top four rows, which generally require either an active event, a stack of Mutation Potions, or a server announcement to trigger. If you want a deeper ladder of which to chase, the mutation tier ranking has the ranked list in priority order.

Sell Value Worked Example

To see how the modifier math actually plays out, take a Forgotten Hydra with a base sell value of roughly 10,000 coins and a measured weight of 12 kg. A plain catch sells for 10,000 coins. A Shiny catch doubles that to 20,000 coins, and a Glow triples it to 30,000. A Ghost modifier raises the floor to 50,000 coins, but a Mythic modifier pushes the same fish to 80,000 coins, and a Prismatic rolls the same fish to 120,000 coins with the +25% weight bonus pushing the kg readout from 12 to 15.

At the very top, a single Eternal modifier on a Forgotten Hydra has been reported by players to clear 250,000 coins on a clean roll, which is why the Mythic rarity band is where every farming route ultimately ends.

Fish It Mutation Tier List: Best Mutations to Chase

Because there are roughly twenty modifiers in the live pool, ranking them by overall value is more useful than reading the raw table. The following fish it mutation tier list sorts every modifier into S, A, B, and C bands based on the combination of sell multiplier, weight bonus, accessibility, and how reliably players can farm it. If you are new to the game and want a wider net, the beginner to advanced tips walkthrough shows the same priorities in action.

S-Tier Mutations (Worth Resetting Your Server For)

The S-tier holds every modifier that can push a single catch past 200,000 coins on a clean roll, and that means Eternal, Void, Prismatic, and Celestial. Eternal is the only modifier with a 25x sell multiplier plus a 50% weight bonus, and it currently drops from the Withering Core boss in the late-game island chain. Void and Celestial are limited-event rolls that come from the Arcadia island banner, and Prismatic is the multi-potion chain where you stack a Mutation Potion, a luck potion, and an event announcement to force the roll.

What makes the S-tier special is that all four modifiers also boost the weight readout on the catch, which doubles the payout if you are selling by kg on the Withering Core. A 15 kg catch that normally pays 2,000 coins per kg will pay 30,000 coins at base weight; an Eternal modifier on the same catch pays 50,000 coins per kg because the modifier's 50% weight bonus also unlocks a higher per-kg bracket.

A-Tier Mutations (Daily Farmer Targets)

The A-tier covers Ascended, Chroma, Mythic, and Corrupted. These modifiers all have sell multipliers between 7x and 10x and do not require the Arcadia island to roll. Mythic is the most accessible of the four because it fires whenever the server-wide announcement banner goes live, which the developer Fish Atelier triggers roughly every few hours during weekend windows. Chroma requires both a Mutation Potion and an active event, so it is a half-step harder. Ascended appears during limited-time banners, and Corrupted is one of the more reliable Epic-band rolls because it has a wider set of qualifying conditions.

The practical difference between the A-tier and the S-tier is opportunity cost. An A-tier roll will generally clear 70,000–100,000 coins on a Forgotten Hydra, whereas an S-tier roll on the same fish can clear 200,000+. If you are farming for a specific rod upgrade or trying to push your rod progression tier list, the A-tier is where you spend 90% of your session.

B-Tier Mutations (Reliable but Modest)

The B-tier covers Galactic, 8-Bit, Dark, Ghost, Electric, Toxic, and Frozen. These are the workhorse modifiers that show up on most mid-game sessions. Galactic and 8-Bit are tied to specific islands (the Sky island and the 8-Bit island respectively), so they require travel but not a potion. Dark and Ghost need the night-time window. Electric and Toxic need storm or polluted zones, and Frozen needs the snow biome. None of these modifiers break the economy on their own, but they reliably double or triple base value, which compounds across hundreds of casts.

C-Tier Mutations (Background Rolls)

The C-tier covers Shiny, Glow, Mossy, Sandy, and Normal. These are the passive rolls you get on any cast, and they matter mostly for the first hours of a fresh save. Shiny and Glow are decent early-game multipliers that keep you above the 1,000-coin threshold, while Mossy and Sandy are essentially flavor modifiers that nudge your weight readout by 5%. Treat the C-tier as a baseline; the moment you have a better rod and access to the first island event, you stop chasing C-tier rolls and start chasing the A and S bands.

How to Get Mutations in Fish It

Because modifiers come from so many different triggers, the practical path through the fish it mutation guide is to learn one trigger at a time. The fastest route from a fresh save to consistent A-tier rolls looks like this.

Step 1: Stack Weather, Time, and Location Conditions

The simplest free source of mutations is the environment. Casting during a storm can roll Electric, casting at night can roll Ghost or Dark, and casting in the snow biome can roll Frozen. None of these cost you anything, and they compound if you stack two or three conditions at once. A storm + night cast in the right biome is one of the easiest ways to push a B-tier modifier into an Epic roll without spending a single potion.

Step 2: Use Mutation Potions from Codes and Events

Mutation Potions are the most reliable single-shot way to force a modifier on your next catch. According to the active Fish It code redemption guide, most live codes hand out a mix of luck potions, coin potions, and Mutation Potions, and the redemption path is straightforward: launch the game, reach level 10, open the Store from the red shopping basket, scroll to the code entry field, type the code, and press Redeem. Codes are case-sensitive and rotate frequently, so it pays to check the verified Fish Atelier group page for the latest active list.

Step 3: Wait for Server-Wide Announcements

Server-wide announcements fire automatically when a developer triggers a global event. They grant every player on the server a temporary boost and unlock Mythic-class rolls. The smartest play is to keep your rod equipped and a free inventory slot open the moment the announcement banner appears, because the boost window is short and you do not want to waste it navigating menus.

Step 4: Farm the Withering Core and Arcadia Islands

The late-game islands are where the S-tier modifiers drop. The Withering Core expansion added the highest-rarity Forgotten Hydras fish, and Eternal modifiers roll from that boss encounter. Arcadia is the limited-time island where Void and Celestial modifiers are gated. Both islands are gated by rod level and coin cost, so a player just starting out will need to grind their way up before they can farm the S-tier. Once you unlock them, the pet egg and pet tier guide is a good companion reference because the pet XP from these high-tier catches accelerates the rest of your account.

Step 5: Combine Potions and Conditions for Stacked Rolls

The final layering trick is to combine a potion with an active event and an environment condition. Stacking a Mutation Potion during a server announcement in the correct biome has been reported by players to push a modifier roll into the Chroma or Prismatic band, which is the difference between a 70,000-coin catch and a 200,000-coin catch. If you want to see the full noob-to-master walkthrough, the rare Megalodon hunt progression video demonstrates this stacked-roll strategy end to end.

Best Mutations to Farm Right Now in Fish It

Because the live modifier pool shifts with every developer update, the practical answer to "which fish it best mutations should I farm today" depends on which islands you have unlocked and how many potions you have on hand. The current meta, as of the Withering Core expansion and the Arcadia limited-time event, ranks the priorities like this.

If you are still on the early islands and have not unlocked Arcadia or the Withering Core, the highest-value modifier you can realistically chase is Mythic from server announcements, with Electric and Ghost as your daily-driver rolls from the environment. If you have unlocked the Withering Core, Eternal is the single highest-paying modifier in the game on a per-catch basis, and a single clean roll on a Forgotten Hydra is the fastest coin-farming loop in the live patch. If you are in the Arcadia window, Void and Celestial are the priorities because they are time-limited and will rotate out when the banner closes.

For the mid-game player, Ascended and Chroma are the smartest targets because they do not require boss materials or a limited island, but they do pay more per catch than any B-tier modifier. Players who are stacking potion drops and event tokens should save them for the rare triple-stack window where a Prismatic roll is possible, because that is the only path to a 12x sell multiplier without unlocking the Withering Core.

The one modifier that tends to be over-rated in community discussions is 8-Bit. It is flashy and it requires a dedicated island trip, but the 6x sell multiplier is the same ceiling as Galactic, and Galactic is easier to farm on a routine basis. Save the 8-Bit run for when you are doing a pet XP sweep, not as your primary coin route.

Frequently Asked Questions

What is the best mutation in Fish It right now?

The strongest modifier in the live pool is Eternal, which carries a 25x sell multiplier and a 50% weight bonus. It drops from the Withering Core boss encounter, and a clean roll on a Forgotten Hydra has been reported by players to clear 250,000 coins. The next best options are Void and Celestial from the Arcadia limited-time island.

How do I get mutations without spending potions?

The environment is the free source. Cast during a storm for Electric, at night for Ghost or Dark, in the snow biome for Frozen, and in deep water for Glow. Stacking two or three of those conditions at once can push a passive roll into the Epic band without spending a single potion from your inventory.

Do mutations stack with each other?

No, only one mutation modifier can be active on a single fish at the time of the catch. You can however stack the conditions that trigger a better roll — for example, casting a Mutation Potion during a server announcement in the correct biome to force a Chroma or Prismatic modifier on the next cast.

Are mutation values the same on every fish?

The sell multiplier is constant, but the actual coin payout scales with the base species value. A Mythic modifier on a 50-coin Shrimp pays 400 coins, while the same modifier on a 10,000-coin Forgotten Hydra pays 80,000 coins. That is why high-rarity fish with high-tier modifiers are the real coin earners, not low-rarity fish with the same modifier.