How to Get Plesiosaur & Pliosaur Fisch Tidefall (March 2026) Quick Guide

Updated by Tanvi Mukherjee
January 20, 2026
RobloxGaming

The Fisch Tidefall update, released on January 17, 2026, has revolutionized the underwater fishing experience in Roblox’s popular fishing simulator. Among the most coveted additions are the Plesiosaur and Pliosaur – two exotic hunt event fish that have captured the attention of dedicated anglers worldwide. This comprehensive guide will walk you through everything you need to know to obtain these legendary creatures, from accessing the mysterious Tidefall area to mastering the hunt events and optimizing your setup for maximum success.

Quick Reference: Plesiosaur vs Pliosaur Overview

Feature	Plesiosaur	Pliosaur
Location	Tidefall Castle	Collapsed Ruins
Spawn Rate	0.25% (0.02% for Forbidden variant)	1% (0.005% for Ancestral variant)
Best Rod	Fabulous Rod	Blade of Glorp/Seraphic/Wind Elemental
Required Bait	Shark Head	Shark Head
Best Time	Night	Night
Best Weather	Foggy	Foggy
Best Season	Winter	Winter
Special Effect	–	-90% progress speed

Understanding the Tidefall Update

The Tidefall update represents Fisch’s most significant content expansion to date, introducing an entirely new underwater ecosystem with six distinct sublocations. This massive update added 36 new quests, 10 hunt events, 7 new fishing rods, and countless other features that have transformed the game’s endgame content.

What makes Tidefall special? Unlike previous areas, Tidefall operates as a complex cave system where pressure mechanics and specialized equipment play crucial roles. The area is only accessible through the Underwater Opening and requires completing the Lost Diver quest to obtain the Abyssal Tonic – essential for surviving the extreme underwater pressure.

How to Access Tidefall: Complete Walkthrough

Step 1: Reach the Underwater Opening

First, spawn a boat at Moosewood Village and head toward the Ancient Isle direction. Along your journey, you’ll encounter multiple Diver Boats parked in the middle of the ocean. These boats serve as the gateway to Tidefall’s underwater realm.

Coordinates: 3223, 130, 850 (official Fisch Wiki)

Step 2: Complete the Lost Diver Quest

This is the mandatory quest that grants access to Tidefall:

Equipment Required: Super Flippers, Tidebreaker, and Advanced Diving Gear
Start the Quest: Jump onto the Red Diver boat and speak with the left NPC, selecting “I’ll look for him”
Dive Deep: Enter the water and watch both your blue oxygen bar and purple pressure bar
Navigate Obstacles: Cross two bridge-like obstacles deep underwater
Find the Submarine: Locate the sunken submarine with the Lost Diver NPC on its right side
Rescue and Return: Bring the diver back to the surface to receive the Abyssal Tonic

Critical Note: If your purple Pressure bar depletes, you’ll be eliminated instantly, even with oxygen remaining. The Abyssal Tonic is essential for surviving Tidefall’s extreme pressure.

Step 3: Enter Tidefall

Once equipped with the Abyssal Tonic, dive beyond the sunken submarine and follow the water stream to enter the main Tidefall area. You’ll arrive in the central hub area, which connects to all four sublocations through distinct paths.

Complete Pliosaur Hunt Guide

Location and Access

The Pliosaur exclusively spawns in the Collapsed Ruins sublocation during its dedicated hunt event. To reach this area:

From Tidefall’s central hub, head left from the merchant
Navigate to coordinates: 3155, -1052, 1261 (TechWiser) or 3149, -1052, 1297 (Beebom)
Enter the Collapsed Ruins through the designated entrance

Understanding Pliosaur Hunt Events

Spawn Mechanics: The Pliosaur Hunt has a 1% chance of triggering during the day cycle, according to official Fisch Wiki data. When active, a server notification will appear: “A Pliosaur stalks the Collapsed Ruins…”

Ancestral Pliosaur Variant: There’s also an extremely rare Ancestral Pliosaur Hunt with a 0.005% spawn chance that replaces the regular Pliosaur Hunt. This variant is significantly more valuable but incredibly difficult to encounter.

Optimal Setup for Pliosaur Hunting

Best Fishing Rods:

Blade of Glorp (top choice)
Seraphic Rod
Wind Elemental Rod

Essential Preferences:

Bait: Shark Head (non-negotiable for best results)
Time: Night (use Sundial Totem to speed up time)
Weather: Foggy (use Smokescreen Totem to trigger)
Season: Winter (use Smokescreen Totem to summon fog)

Pro Strategy: Keep both Smokescreen and Sundial Totems ready. The moment the Pliosaur Hunt event triggers, immediately activate both totems to create optimal conditions before heading to the fishing spot.

Dealing with Pliosaur’s Special Challenge

The Pliosaur applies a devastating -90% progress speed effect on your fishing rod. To counter this:

Recommended Enchantments:

Swift (increases progress speed)
Steady (maintains consistent progress)
Immortal (prevents rod breaking)
Blessed Song (overall performance boost)

These enchantments are crucial for successfully reeling in the Pliosaur despite its resistance effect.

Complete Plesiosaur Hunt Guide

The Obelisk Puzzle: Your First Challenge

Unlike the Pliosaur, accessing the Plesiosaur requires completing the complex Obelisk puzzle scattered throughout Tidefall. This puzzle involves five different colored Obelisks, each requiring specific fish offerings:

Obelisk Color	Location	Required Fish	How to Obtain
Gold	Collapsed Ruins	Goldwraith	Crowned Ruins hunt event (0.5% spawn)
Sky Blue	Near bridge opposite Tidefall shop	Reef Titan	Coral Bastion hunt event (1% spawn)
Red	Behind Tidefall shop	Pliosaur	Collapsed Ruins hunt event (1% spawn)
White	Near waterfall in Tidefall area	Sparkling Dripstone	Trash item in Tidefall bestiary
Purple	Northeast opposite Tidefall shop	Omnithal	Sunken Reliquary hunt event (1% spawn)

Pro Tip: The Goldwraith and Reef Titan are also hunt event fish, so you’ll need to participate in multiple hunt events to complete this puzzle. Consider coordinating with other players to maximize your chances during active events.

Accessing Tidefall Castle

Once you’ve completed the Obelisk puzzle:

Head toward the lush green-covered area in Tidefall
Glide over the water to reach the hidden Tidefall Castle
This is the exclusive location for Plesiosaur hunting

Plesiosaur Hunt Events

Spawn Mechanics: The Plesiosaur Hunt has a 0.25% chance of triggering during the day. When active, you’ll see: “A Plesiosaur prowls Tidefall…”

Forbidden Plesiosaur Variant: There’s an ultra-rare Forbidden Plesiosaur Hunt with a 0.02% spawn chance that replaces the regular event. This Divine Secret rarity fish is one of the rarest catches in the game.

Identification: When fishing during a Plesiosaur Hunt, watch for a black colored exclamation mark – this indicates you’ve hooked the Forbidden Plesiosaur variant.

Optimal Setup for Plesiosaur Hunting

Best Fishing Rod:

Fabulous Rod (best in the game)
Alternatives: Ruinous Oath Rod or Rod of the Forgotten Fang

Essential Preferences:

Bait: Shark Head
Time: Night (use Sundial Totem)
Weather: Foggy (use Smokescreen Totem)
Season: Winter (use Smokescreen Totem)

Important Note: Unlike the Pliosaur, the Plesiosaur doesn’t apply progress speed penalties, making it slightly easier to reel in once you’ve solved the access puzzle.

Advanced Strategies and Pro Tips

Maximizing Hunt Event Success

Server Hopping: If no hunt events are triggering on your server, consider switching to different servers to find active events
Time Management: Always keep Sundial Totems ready to immediately switch to nighttime when events trigger
Weather Control: Smokescreen Totems are essential for creating the foggy conditions both fish prefer
Group Coordination: Hunt events are server-wide, so coordinate with other players to maximize efficiency

Equipment Optimization

Essential Gear for Tidefall:

Abyssal Tonic (required for pressure resistance)
Advanced Diving Gear (for extended underwater exploration)
Super Flippers (for enhanced mobility)
Tidebreaker (for accessing deep areas)

Rod Enhancement Strategy:

Prioritize Swift enchantment for Pliosaur hunting (to counter -90% speed penalty)
Blessed Song provides overall performance improvements
Consider multiple enchanted rods to switch between different hunt events

Economic Considerations

Both Plesiosaur and Pliosaur are valuable catches, but their true value extends beyond mere selling price:

Plesiosaur: Essential for crafting the Requiem Rod – one of the best fishing rods in the game
Pliosaur: Required for completing the Obelisk puzzle to access Tidefall Castle
Variants: Ancestral Pliosaur and Forbidden Plesiosaur are extremely valuable for both collection and trading purposes

Common Mistakes to Avoid

Insufficient Preparation: Don’t attempt Tidefall without proper pressure resistance equipment
Wrong Timing: Many players waste time hunting during daytime when both fish prefer nighttime
Poor Weather Conditions: Foggy weather significantly increases catch rates – don’t settle for clear skies
Inadequate Rods: Using basic rods will make catching these exotic fish nearly impossible
Missing Totems: Always carry Smokescreen and Sundial Totems for immediate weather/time control
Ignoring Enchantments: For Pliosaur hunting, enchantments aren’t optional – they’re essential

Troubleshooting Guide

Hunt Events Not Triggering

Solution: Hunt events have low spawn rates (Plesiosaur: 0.25%, Pliosaur: 1%). Try server hopping or wait patiently. Remember that events can only trigger during daytime cycles.

Can’t Access Tidefall

Solution: Ensure you’ve completed the Lost Diver quest and obtained the Abyssal Tonic. Check that you have proper diving equipment and are entering from the correct coordinates.

Fish Keep Escaping

Solution: Verify you’re using the correct bait (Shark Head for both fish), optimal weather conditions (foggy), and appropriate time (night). For Pliosaur, ensure your rod has Swift enchantment to counter the speed penalty.

Obelisk Puzzle Not Working

Solution: Double-check that you’re offering the correct fish to each Obelisk. Some required fish (like Goldwraith and Reef Titan) are also hunt event fish, so you may need to wait for those events first.

FAQ

How often do Plesiosaur and Pliosaur hunt events occur?

Plesiosaur Hunt has a 0.25% spawn chance, while Pliosaur Hunt has a 1% spawn chance during daytime cycles. The variants (Forbidden Plesiosaur at 0.02% and Ancestral Pliosaur at 0.005%) are extremely rare.

Can I catch both fish more than once?

Yes, both Plesiosaur and Pliosaur can be caught multiple times. Each successful catch during a hunt event doesn’t prevent future catches in subsequent events.

What’s the difference between regular and variant fish?

Regular Plesiosaur is Exotic rarity, while Forbidden Plesiosaur is Divine Secret rarity. Regular Pliosaur is Exotic, while Ancestral Pliosaur is Secret rarity. Variants are significantly rarer and more valuable.

Do I need to complete the Obelisk puzzle every time?

No, once you complete the Obelisk puzzle, Tidefall Castle remains permanently accessible for future Plesiosaur hunting.

Can I catch these fish outside of hunt events?

No, both Plesiosaur and Pliosaur only spawn during their respective hunt events. Regular fishing in these locations won’t yield these fish.

What’s the best time of day to hunt for these events?

Since hunt events only trigger during daytime cycles, play during periods when you can actively monitor for event notifications. Use Sundial Totems to immediately switch to optimal nighttime fishing conditions once events trigger.

Conclusion

Mastering the Plesiosaur and Pliosaur hunts in Fisch’s Tidefall update represents the pinnacle of endgame content in 2026. These exotic fish require dedication, preparation, and strategic thinking, but the rewards – both in terms of valuable catches and progression opportunities like the Requiem Rod – make the effort worthwhile.

Remember that patience is key. With spawn rates as low as 0.25% for Plesiosaur and 1% for Pliosaur, you may need to invest significant time before successfully catching these elusive creatures. However, by following this comprehensive guide, optimizing your setup, and staying persistent, you’ll eventually add these magnificent prehistoric fish to your collection.

Happy hunting, and may your lines always be tight when the Plesiosaur and Pliosaur events finally trigger!