Slimejack

Slimejack

He's coated in a very thick layer of slime. He keeps slipping out of your hands!

Spring Summer Fall Winter Medium (55)
Base Price
100g

Quick answer

Where to catch Slimejack in Stardew Valley

Catch Slimejack at Mutant Bug Lair during Spring, Summer, Fall, Winter from Any in any weather. It sells for 100g at normal quality and 200g when smoked.

Slimejack
Where to catch

Mutant Bug Lair

Season

Spring, Summer, Fall, Winter

Time

Any, any weather

Sell price

100g base, 200g iridium

Fish pond value

80g Roe -> 160g Aged Roe

Best tackle

Trap Bobber or Cork Bobber

Keep or sell

Keep only if needed for bundles, gifts, cooking, or ponds

All fish locationsBest fish by seasonFish pond valuesBest fish ponds

Price decision

Sell, smoke, or use a Fish Pond?

Change professions to compare the same fish without changing the page or URL.

Sell directly

100g

Normal quality

Smoke once

200g

+100g before Coal and machine time

One pond product

80g Roe → 160g

Aged Roe; not daily profit

Is Slimejack worth keeping?

Keep Slimejack if it fills a bundle, recipe, gift, Fish Pond, or collection goal.

When to sell or smoke it

Sell or smoke extra Slimejack when you need gold and do not have a specific use for it.

Fish Pond and Roe

80g Roe can become 160g Aged Roe. Fish Pond output depends on pond population and random daily production rolls. Formula value: 80g Roe, then 160g Aged Roe.

Fish Pond output depends on pond population and random daily production rolls. The exact max-population output table and first capacity quest are shown below.

Verified 1.6.15 pond rules

Slimejack Fish Pond output

Final daily chances at population 10; each value already includes the pond's 95% base output check and ordered item rolls.

Open calculator

Any item per day

84%

Maximum population

10

Population growth

Every 3 days

Possible itemQuantityOverall daily chance
Green Slime Egg11.9%
Slime10-5032%
Green Algae16.1%
Roe1 minimum44%
First capacity quest: at 1 fish, bring one of 20 Slime to unlock capacity 2. Roe quantities are minimums before the repeated 20% extra-Roe roll; a Golden Animal Cracker doubles the final quantity, not these probabilities.

Where & When to Find Slimejack

Location

  • Mutant Bug Lair

Caught in the Mutant Bug Lair during every season at any time and in any weather.

Time & Conditions

Any
Any weather

Difficulty & Catching Strategy

Difficulty: 55

Medium

Moderate challenge

EasyHardLegend (110)

Dart Behavior

Makes sudden, quick movements in random directions. Most unpredictable behavior.

Tip: Stay centered and use small, quick adjustments. Don't overreact to movements.

Expert Tips for Slimejack

Fish just inside the Mutant Bug Lair entrance to avoid repeated Mutant Fly attacks while handling the minigame.

Recommended Tackle

Trap Bobber

Slower catch bar drain

Best for: Difficult fish that move a lot

Cork Bobber

Larger fishing bar

Best for: Hard fish like legendaries

Tackle requires an Iridium Rod. Purchase from Willy's shop at Fishing Level 6.

Sell Prices by Quality

Fish bonus: Inactive
QualityPrice
Normal100g
Silver125g
Gold150g
Iridium200g

Smoked Fish Value

Artisan: Inactive

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 QualityFish ValueSmoked Value
Normal100g200g
Silver125g250g
Gold150g300g
Iridium200g400g

Formula: fish sell price x 2. See the formula audit for source notes.

Uses for Slimejack

  • Fish Pond
  • Sashimi
  • Algae Soup quest item

Fish Pond Production

Fish Pond

Produces: Slimejack Roe

Roe Value: 80g → Aged Roe: 160g

Did You Know?

Slimejack's pond can produce Green Algae and other items at higher populations.