With the Second Sea update in Fisch, a host of new features have been introduced, and one of the most intriguing additions is the Cursed Nuke. This rare item behaves similarly to regular nukes but comes with a unique twist. If you’re looking to get your hands on one, you’ll need patience, skill, and a bit of luck. In this guide, I’ll break down everything you need to know about Cursed Nukes, including how to obtain them, their effects, and why you might want one.
How to Get & Use Cursed Nukes Guide
Cursed Nukes are special nukes that are exclusive to the Second Sea. Unlike regular nukes, these cannot be found in the First Sea and come with a 1 in 50,000 chance of being caught while fishing. When detonated, they apply the Cursed mutation to fish caught in the affected area. However, there have been reports of fish gaining the Nuclear Mutation instead, which is likely a bug that may be patched in the future.
NOTE: Still not sure how to reach the Second Sea in Fisch? No worries, I’ve got you covered! Check out my guide for a step-by-step breakdown.
Cursed Nukes cannot be bought, traded, or sold—the only way to obtain one is by fishing.
- Appearance: Unlike regular nukes, Cursed Nukes have a neon green color and lack the nuclear symbol in the center.
- Drop Location: Only found in the Second Sea.
- Acquisition Method: Fished as an additional item, similar to tools like the GPS and Basic Diving Gear.
- Known Bug: If you use the Rod of the Eternal King and trigger its second ability, it can skip the mini-game and store the nuke without detonation.

How Do Cursed Nukes Work?
When you catch a Cursed Nuke, a mini-game will appear. If you fail to complete it, the nuke detonates instantly, flying into the air and landing somewhere on the island or water where you’re fishing.
When detonated, all fish caught within the affected radius will receive a mutation. However, as mentioned earlier, instead of the intended Cursed mutation, fish are currently getting the Nuclear mutation (4x sell value), which may be a bug.
The mutation effect lasts 30 minutes and is marked by a green rim around the affected area. Moreover, the Fish Radar can show the affected area and time remaining.

Why Would You Want a Cursed Nuke?
Cursed Nukes may be rare, but they offer some major benefits when used correctly:
- Significantly increases the value of fish caught in the affected area.
- Can be used anywhere in the Second Sea, there’s no specific fishing spot required.
- Mutations like Nuclear Mutation can boost profits tremendously.
While the exact benefits of the Cursed mutation remain uncertain due to the current bug, the Nuclear mutation alone makes this item highly valuable for players looking to maximize their fishing profits.
Wrap-Up
Cursed Nukes are a powerful but incredibly rare item in Fisch. While their intended effect is still somewhat uncertain due to ongoing bugs, they currently provide one of the best ways to boost the value of your fish through the Nuclear mutation. If you manage to catch one, be careful with the mini-game, one wrong move, and you’ll set it off! For now, it’s wise to stash it away; who knows how valuable it might become once the bugs are finally fixed?