1.0× this
Exotic
RotbloomC$42.9KStableSynced yesterday
Source: Fisch Wiki (CC BY-SA 4.0) · Value = in-game sell price, not player trade prices · Last checked Nov 11, 2026
SecretValue rank #39 of 677
C$42.6K
= C$42,598 · Normal, average weight
Stable · Synced Nov 11, 2026 · How are values worked out?
Value by mutation
All mutations →Caustic Starwyrm is worth about the same as Rotbloom (C$42.9K) and about the same as Awakened Omnithal (C$42K).
Fish data
RaritySecret
Where to catchBrine Pool
Average weight21.5K kg
Weight range21K – 46.2K kg
Sells per kgC$1.981
XP32,870
Recent changes
Full update log →No change since Nov 9, 2026Caustic Starwyrm is still C$42,598.
Fish with a similar value
RotbloomC$42.9K1.0× this
Special
Christmas LeviathanC$42.9KStableSynced yesterday
1.0× this
Exotic
TerrosunderC$43KStableSynced yesterday
0.99× this
Not listed
Awakened OmnithalC$42KStableSynced yesterday
What can Caustic Starwyrm trade for?
1 × Caustic Starwyrm ≈ 2 × Blue Whale (C$43K vs C$42.6K, 0.9% apart = Fair)Try it in the calculator
1 × Caustic Starwyrm ≈ 2 × Coral Turkey (C$40.5K vs C$42.6K, 4.9% apart = Fair)Try it in the calculator
1 × Caustic Starwyrm ≈ 2 × Frosty Turkey (C$40.5K vs C$42.6K, 4.9% apart = Fair)Try it in the calculator
Caustic Starwyrm sell price by weight and mutation
C$ at 1.98 C$/kg, using the game's rounding. Mutations are the highest appraisable and event ones; see all multipliers.
| Mutation | × | Lightest21,000 kg | Average21,500 kg | Heaviest46,200 kg |
|---|---|---|---|---|
| No mutation | 1 | 41,580 | 42,570 | 91,476 |
| Shiny | 1.85 | 76,923 | 78,755 | 169,231 |
| Sparkling | 1.85 | 76,923 | 78,755 | 169,231 |
| Nightmare | 8.8 | 365,904 | 374,616 | 804,989 |
| Necrotic | 7.4 | 307,692 | 315,018 | 676,923 |
| Shrouded | 7 | 291,060 | 297,990 | 640,332 |
| Wicked | 6.6 | 274,428 | 280,962 | 603,742 |
| Prismatic | 6.5 | 270,270 | 276,705 | 594,594 |
| NightmareFischFright 2025 | 8.8 | 365,904 | 374,616 | 804,989 |
| Jack's CurseFischFright 2025 | 8.5 | 353,430 | 361,845 | 777,546 |
| PopsicleFischfest | 8.16 | 339,293 | 347,372 | 746,445 |
Other fish at Brine Pool
- Bone · Trash · 43 C$/kg
- Brine Phantom · Legendary · 4.6 C$/kg
- Brine Shrimp · Uncommon
- Brine Sovereign · Exotic
- Dissolved bone · Trash
- Dweller Catfish · Rare
- Globe Jellyfish · Unusual
- Stormgazer · Legendary
FAQ
How much is Caustic Starwyrm worth in Fisch?
One average Caustic Starwyrm is worth about C$42,598. A Shiny or Sparkling one (×1.85) is C$78,807, and a Midas one (×2.5) is C$106,496. The value is the Fisch Wiki's average sell price, so a heavier fish sells for more.
What does Caustic Starwyrm sell for at different weights?
At 1.98 C$ per kg, Caustic Starwyrm sells for 41,580 C$ at its lightest weight (21,000 kg) and 91,476 C$ at its heaviest (46,200 kg), with no mutation.
Where do you catch Caustic Starwyrm in Fisch?
Caustic Starwyrm is listed under Brine Pool. Brine Pool has 9 fish in total.
How rare is Caustic Starwyrm?
Fisch Wiki lists Caustic Starwyrm as Secret and it gives 32,870 XP. It weighs 21,000–46,200 kg.