Radioactive Carp★
A glowing mutant carp from the radioactive mines. Even more mutated than its parent.
Quick answer
Where to catch Radioactive Carp in Stardew Valley
Catch Radioactive Carp at Sewers during Spring, Summer, Fall, Winter from Any in any weather. It sells for 1000g at normal quality and 2000g when smoked; difficulty 95 makes tackle preparation important.
Sewers
Spring, Summer, Fall, Winter
Any, any weather
1000g base, 2000g iridium
530g Roe -> 1060g Aged Roe
Cork Bobber or Trap Bobber
Sell extras; keep one for collection or Fish Pond use
Is Radioactive Carp worth keeping?
Keep Radioactive Carp if it fills a bundle, recipe, gift, Fish Pond, or collection goal.
When to sell or smoke it
Sell or smoke extra Radioactive Carp when you need gold and do not have a specific use for it.
Fish Pond and Roe
A Radioactive Carp Fish Pond can produce Roe, but output depends on pond population and daily rolls. Formula value: 530g Roe, then 1060g Aged Roe.
Where & When to Find Radioactive Carp
Location
- Sewers
Found in the sewers after catching the original Mutant Carp. Requires Qi's Extended Family quest.
Time & Conditions
Difficulty & Catching Strategy
Difficulty: 95
ExtremeOne of the hardest fish in the game
Mixed Behavior
Unpredictable movement that alternates between different patterns. Requires adaptability.
Tip: Stay centered and react to changes. Don't commit too heavily to one direction.
Expert Tips for Radioactive Carp
Part of Qi's Extended Family quest. Same location as Mutant Carp (Sewers). Year-round availability.
Recommended Tackle
Cork Bobber
Larger fishing bar
Best for: Hard fish like legendaries
Trap Bobber
Slower catch bar drain
Best for: Difficult fish that move a lot
Tackle requires an Iridium Rod. Purchase from Willy's shop at Fishing Level 6.
Sell Prices by Quality
| Quality | Price |
|---|---|
| Normal | 1000g |
| Silver | 1250g |
| Gold | 1500g |
| Iridium | 2000g |
Smoked Fish Value
The Fish Smoker uses 1 Coal and doubles the fish sell price while preserving quality. Fisher or Angler changes the fish value first; Artisan then increases the smoked product.
| Input Quality | Fish Value | Smoked Value |
|---|---|---|
| Normal | 1,000g | 2,000g |
| Silver | 1,250g | 2,500g |
| Gold | 1,500g | 3,000g |
| Iridium | 2,000g | 4,000g |
Formula: fish sell price x 2. See the formula audit for source notes.
Uses for Radioactive Carp
- Legendary II fish
- Qi's Extended Family quest
- Trophy fish
Did You Know?
Its radioactive glow suggests even more mutation than its already-mutant parent.