How to Find and Catch the Mosasaurus in Fisch

Want to catch yourself a Mosasaurus in Roblox Fisch? Read our guide to find out the Mosasaurus location, bait, and other preferences now.

The Mosasaurus is one of the most elusive mythical fish in Fisch, thanks to its rare spawn conditions and challenging capture mechanics. However, with the right setup, timing, and location, you can significantly increase your chances of reeling in this aquatic behemoth.

Mosasaurus Location in Fisch

The Mosasaurus resides exclusively in the saltwater regions of the Ancient Isle, which was introduced in a recent update. Although it doesn’t have a specific guaranteed spawn point, there are ways to improve your chances.

Nighttime is the most favorable time to fish for the Mosasaurus, with foggy weather further increasing the odds. While any saltwater area on the Ancient Isle can yield results, I found the waterfall on the island's western side (the one that contains the entrance to the Ancient Archives) to be the most productive spot. Fishing here also presents opportunities to encounter other mythical creatures, such as the Colossal Squid and Meg’s Fangs - though repeated catches of Meg’s Fangs can test your patience. They certainly did for me.

It’s worth noting that luck can sometimes trump optimal conditions. While the recommended bait for the Mosasaurus is the rare Truffle Worm, I managed to catch one using the more common Worm bait during a clear night.

How to Catch the Mosasaurus

Once you’ve hooked a Mosasaurus, catching it is no small feat. This mythical fish significantly slows your progress, reducing the reeling speed by -75%, and its constant movement demands skill and precision. Hooking one can lead to a prolonged struggle, but persistence pays off.

The Mosasaurus offers generous rewards upon capture. Landing one grants 3,000 XP, and its value averages 6,160.60C$, calculated based on its weight (valued at 0.5357C$ per kg). With an average weight of 9,000 kg, it’s a lucrative catch.

If you're having trouble hooking the Mosasaurus, consider using a Smokescreen Totem (found at the back of Mushgrove Swamp, near the exit of the Aligator Marsh) to push every variable in your favor. The weather and celestial cycle are two things you can control if you have the right Totems. If you don't want to wait for nighttime, grab the Sundial Totem (from the cave on Sunstone Island), too.

Choosing the Right Rod

Selecting a rod capable of handling the Mosasaurus’s weight is critical. Below is a comparison of the top rods suited for this task:

Rod	Price	Location	Lure Speed	Luck	Control	Resilience	Max Weight	Notes
Steady Rod	7,000C$	Blacksmith, Roslit Bay	-60%	35%	0	30%	10,000 kg	A balanced choice for beginners, offering reliability and decent resilience.
Magnet Rod	15,000C$	Terrapin Island	55%	0	0.1	0%	10,000 kg	Best for players who are prioritizing a faster lure speed over luck or resilience. Be sure to enchant your Magnet Rod with a resilience or control-boosting enchantment.
Kings Rod	120,000C$	Enchant Altar	-45%	55%	0.15	35%	Infinite	Ideal for late-game players targeting like rarest catches in Fisch, like the Mosasaurus.
Rod of the Depths	750,000C$	Underwater Maze, The Depths	65%	130%	0.15	8.5%	30,000 kg	A great option for late-game anglers, offering high luck and weight capacity stats.

Avoid using Mythical Rods unless they’re enchanted with Unbreakable, as their maximum weight limit of 2,000 kg makes them unsuitable for the Mosasaurus. Though I haven't suggested any of the 10 craftable rods above, the Level 750-locked end-game rod is suitable, too. Most of the craftable rods are awful, though.

Best Enchantments for the Mosasaurus

Enhancing your rod with the right enchantments can make all the difference when hunting for this mythical fish. It's important to keep a few Relics for emergencies, so be sure to farm Enchant Relics when you have the time. Below is a breakdown of the most useful enchantments to catch the Mosasaurus:

Enchantment	Effect	Why It’s Useful
Steady	Reduces progress loss by 25% when fishing.	Helps maintain your progress against the Mosasaurus’s aggressive movements.
Controlled	+0.05 Control.	Provides additional precision during reeling.
Resilient	+35% Resilience.	Reduces the likelihood of losing the fish mid-battle.
Quality	+15% Lure Speed, +15% Luck, +5% Resilience.	A versatile enchantment that improves multiple stats, enhancing your overall fishing efficiency.
Scrapper	60% Chance of not consuming bait.	Useful for preserving rare bait like the Truffle Worm.
Unbreakable	+10,000 Max kg.	Critical for handling the Mosasaurus’s massive weight, especially with lower-capacity rods.

Looking for more Fisch content at Pro Game Guides? Check out our guide to the Best Leveling Locations in Fisch and our Fisch Enchants Tier List – Best Enchantments Ranked.