Overview[1][2]
Ancestral Pliosaur is a Secret fish found in Collapsed Ruins.
The Ancestral Pliosaur is a Secret hunt fish obtainable in Tidefall at the Collapsed Ruins. Due to its high rarity it moves erratically across the fishing bar with a -95% locked Progress Speed applied. When hooked, an exclamation iconwill appear above the players head and a shimmering sound is played, like all Secret fish.
How to get it
Fish it up around: Collapsed Ruins (Tidefall). Season: Winter. Weather: Foggy.
Stats
- Bait
- Shark Head
- Base Chance
- 0.02
- Base Resil
- -15
- Base Value
- 66000
- Base Weight
- 250000
- Base XP
- 56,000
- Location
- Ancestral Pliosaur Hunt
- Rarity
- Secret
- Season
- Winter
- Sources
- Fishing Rod
- Time
- Night
- Time of day
- Night
- Weather
- Foggy
- Weight Range
- 150000
- Xp
- 56000
Obtainment
An Ancestral Pliosaur hunt has a 10% chance to replace a Pliosaur Hunt The Ancestral Pliosaur has a minigame where it bites like the, removing a bit of the control bar and a lot of progress. The Ancestral Pliosaur will despawn after 10 minutes if not caught. When an Ancestral Pliosaur is caught, a message in chat will say: “[Pliosaur Hunt]: (user who caught the Ancestral Pliosaur) has caught the Ancestral Pliosaur!”
Appearance
Similar looking to the Pliosaur, but dark red on top and red underneath.
Value
46,200C$
What does this mean?
Fisch's in-game currency. A fish's value is its average sale price in C$ at average weight. A rod's value is its listed C$ price, which may be only one part of a crafting requirement. These are game reference figures, not trading consensus. Values are not comparable across games.
Opening baselineRecorded
Source: Official Fisch Wiki · verified Oct 17, 2026
Trivia
When this fish first came out, it had a 0.005% (1 in 20,000) chance to spawn, which is the same chance as hooking a Paradox Piranha.






