Home > Roblox Guides > How to Get Atomic Mutation in Fisch

How to Get Atomic Mutation in Fisch

Published Date :

The Atomic mutation is a powerful upgrade for any fish because its sell value gets multiplied by 8x. Visually, the fish takes on a bright neon-yellow glow with some particle effects, making it one of the most standout creatures in your collection. So, if you’d like to know the location, weather, season, time and bait to get these types of fish in your bestiary, our guide will walk you through the steps.

How to Get Atomic Mutated Fish in Fisch

atomic mutated great white shark fisch

To get the Atomic mutation, there’s no specific weather condition you need to track. The only thing you need is an item called the Atomic Nuke, which will trigger an event. Here’s how it works:

Obtaining the Atomic Nuke

You can find an Atomic Nuke while fishing in any body of water in the First Sea, but the chances are extremely low (~1 in 75,000). If you have the Scavenger enchantment on your rod, that rate improves to about 1 in 50,000. You can also purchase one from the Black Market for 10,000,000 C$.

Activating the Event

Once you get the Atomic Nuke, you’ll enter a minigame to balance it.

If you succeed the minigame: You keep the Atomic Nuke as an item in your inventory for later use.

If you fail the minigame (or choose to detonate instead): The Atomic Nuke explodes and creates a special area around you. Inside that explosion radius, any fish you catch will have the Atomic mutation applied and so, they will get the 8x value boost.

For the duration of the active event in that zone, any fish caught within that radius will receive the Atomic mutation. After the event ends, the effect goes away, and you’ll need another Nuke to repeat it.

If you plan to sell, trade, or show off your fish, having multiple with the Atomic mutation will be very useful.

Tips and Tricks

Always fish with the Scavenger enchantment active if you’re hunting for the Atomic Nuke because it gives you a 3x higher chance to catch Nukes, Enchant Relics, Treasure Maps and Threads. Plus, you get a 1.75x higher chance for Exalted Relics and 1.5x higher chance for Atomic Nukes.

Prepare your best fishing rod before entering the event zone so you’re ready to reel in high-value catches quickly once the explosion happens. This includes the rarest catch – the Skeletal Serpent.

Coordinate with friends or group members because detonating the Nuke in a populated server can mean more fish caught by your team under the Atomic bonus.

FAQs about the Atomic Nuke Event

Q1: Can I use any fishing spot for the Atomic Nuke event?
Yes, since the Atomic Nuke can spawn from any body of water in the First Sea, you’re not restricted to special locations.

Q2: Will all fish caught in the zone instantly get the Atomic mutation?
Only the ones caught within the radius after the Nuke detonation will gain the mutation.

Q3: Does the Atomic mutation last forever on the fish once caught?
Yes, the mutation is permanent for that fish, so its boosted value is maintained.

  • Dog Race Codes (July 2026)

    Dog Race Codes (July 2026)

    Published Date :

    For those who enjoy fast-paced clicker and racing simulators on Roblox, Dog Race gives you quite a fun experience! Training your strength, hatching cute pets to boost your stats, and collecting wins to climb into the top 50 leaderboard takes plenty of effort and to help you rack up trophies much faster, redeeming free potion… Read More

  • Knife Duels Codes (July 2026)

    Knife Duels Codes (July 2026)

    Published Date :

    Knife Duels provides a refreshing spin on the FPS genre by putting pure melee combat front and center. You can step onto duel pads to challenge other players in 1v1 through 4v4 matches, battling it out to see who can score six wins first. Outplaying opponents on the leaderboard requires sharp reactions, but if you… Read More

  • My Greenhouse Codes (July 2026)

    My Greenhouse Codes (July 2026)

    Published Date :

    If you’re looking for a cozy alternative to standard Roblox farming simulators, My Greenhouse is a relaxed take on the genre. Built by a solo student developer, this game combines classic plant-and-sell farming mechanics with tycoon building, foraging mini-games, character customization, and more. Exploring different regions, unlocking hidden NPCs, and decorating your greenhouse takes extra… Read More

  • TR Legacy Codes (July 2026)

    TR Legacy Codes (July 2026)

    Published Date :

    If you’re a fan of motorcycles and how cool they look, TR Legacy is definitely worth checking out. It brings in some good core motorcycle racing concepts and mixes it with better graphics, nice UI, and also added actual manual gear controls if you want to shift gears yourself. And the best part is that… Read More