1.0× this
Exotic
LivyatanC$45.8KStableSynced yesterday
Source: Fisch Wiki (CC BY-SA 4.0) · Value = in-game sell price, not player trade prices · Last checked Nov 11, 2026
Divine SecretValue rank #30 of 677
C$45.7K
= C$45,667 · Normal, average weight
Stable · Synced Nov 11, 2026 · How are values worked out?
Value by mutation
All mutations →Forbidden Plesiosaur is worth about the same as Livyatan (C$45.8K) and about the same as Ancestral Pliosaur (C$45.5K).
Fish data
RarityDivine Secret
Where to catchTidefall
Average weight200K kg
Weight range100K – 630K kg
Sells per kgC$0.228
XP18,500
Recent changes
Full update log →No change since Nov 9, 2026Forbidden Plesiosaur is still C$45,667.
Fish with a similar value
LivyatanC$45.8K1.00× this
Secret
Ancestral PliosaurC$45.5KStableSynced yesterday
1.0× this
Secret
WitherbloomC$45.9KStableSynced yesterday
0.97× this
Special
Christmas Bloop FishC$44.5KStableSynced yesterday
What can Forbidden Plesiosaur trade for?
1 × Forbidden Plesiosaur ≈ 2 × The Kraken (C$47.9K vs C$45.7K, 4.9% apart = Fair)Try it in the calculator
1 × Forbidden Plesiosaur ≈ 2 × Pirate Captain's Goldfish (C$45.1K vs C$45.7K, 1.2% apart = Fair)Try it in the calculator
1 × Forbidden Plesiosaur ≈ 3 × Crowned Anglerfish (C$47.7K vs C$45.7K, 4.4% apart = Fair)Try it in the calculator
Forbidden Plesiosaur sell price by weight and mutation
C$ at 0.23 C$/kg, using the game's rounding. Mutations are the highest appraisable and event ones; see all multipliers.
| Mutation | × | Lightest100,000 kg | Average200,000 kg | Heaviest630,000 kg |
|---|---|---|---|---|
| No mutation | 1 | 22,800 | 45,600 | 143,640 |
| Shiny | 1.85 | 42,180 | 84,360 | 265,734 |
| Sparkling | 1.85 | 42,180 | 84,360 | 265,734 |
| Nightmare | 8.8 | 200,640 | 401,280 | 1,264,032 |
| Necrotic | 7.4 | 168,720 | 337,440 | 1,062,936 |
| Shrouded | 7 | 159,600 | 319,200 | 1,005,480 |
| Wicked | 6.6 | 150,480 | 300,960 | 948,024 |
| Prismatic | 6.5 | 148,200 | 296,400 | 933,660 |
| NightmareFischFright 2025 | 8.8 | 200,640 | 401,280 | 1,264,032 |
| Jack's CurseFischFright 2025 | 8.5 | 193,800 | 387,600 | 1,220,940 |
| PopsicleFischfest | 8.16 | 186,048 | 372,096 | 1,172,103 |
Price your own Forbidden Plesiosaur in the sell calculator →
Other fish at Tidefall
- Metal Strongbox · Rare · 25 C$/kg
- Lanternfish · Common · 21.67 C$/kg
- Bumpy Snailfish · Uncommon · 0.9 C$/kg
- Anchor · Mythical · 0.41 C$/kg
- Gulper Eel · Unusual · 0.28 C$/kg
- Moray Eel · Unusual · 0.1 C$/kg
- Pelagic Cod · Common · 0.08 C$/kg
- Giant Grouper · Rare
- Plesiosaur · Exotic
- Sixgill Shark · Legendary
FAQ
How much is Forbidden Plesiosaur worth in Fisch?
One average Forbidden Plesiosaur is worth about C$45,667. A Shiny or Sparkling one (×1.85) is C$84,483, and a Midas one (×2.5) is C$114,167. The value is the Fisch Wiki's average sell price, so a heavier fish sells for more.
What does Forbidden Plesiosaur sell for at different weights?
At 0.23 C$ per kg, Forbidden Plesiosaur sells for 22,800 C$ at its lightest weight (100,000 kg) and 143,640 C$ at its heaviest (630,000 kg), with no mutation.
Where do you catch Forbidden Plesiosaur in Fisch?
Forbidden Plesiosaur is listed under Tidefall. Tidefall has 11 fish in total.
How rare is Forbidden Plesiosaur?
Fisch Wiki lists Forbidden Plesiosaur as Divine Secret and it gives 18,500 XP. It weighs 100,000–630,000 kg.