How to GET RUINOUS OATH ROD SHOWCASE in FISCH: Stats, Passive & Bestiary Guide

Hey anglers! Today, we’re diving deep into how you can GET RUINOUS OATH ROD SHOWCASE in FISCH. This rod is not just another piece of gear—it’s arguably one of the most powerful fishing tools in the game right now, especially if you’re hunting for mutations and massive catches. Let’s break it all down!
First off, the Ruinous Oath rod boasts some absolutely wild stats. We’re talking 95% lower speed, 500% luck, 0.1 control, 30% resilience, and an infinite max KG. Yes, you read that right—infinite! That means you can theoretically catch the biggest fish in the game without worrying about your rod breaking. But how do you get it? Well, it’s tied to completing the Crimson Cavern Bestiary with a twist.
How to Unlock the Ruinous Oath Rod

To GET RUINOUS OATH ROD SHOWCASE in FISCH, you’ll need to complete the Crimson Cavern Bestiary. But not just any completion—every fish in the bestiary must be shiny and sparkly! This means you’ll have to collect and appraise each fish until you get those rare shiny-sparkly mutations.
Here’s a quick checklist of the fish you need:
Red-Spotted Polanyi
Red Crab
Sea Raven
Viperfish
Red Fangtooth
Japanese Dragon Eel
Vampire Squid
Colossal Ancient Dragon
Megalodon
Each one must be appraised repeatedly until it’s both shiny and sparkly. This process can cost millions (or even hundreds of millions) of in-game currency, so make sure you’ve saved up!
Ruinous Oath Rod Stats and Passive Ability
Once you unlock it, the Ruinous Oath rod offers a unique passive: perfect catches make fish reel in much faster. When you hit that perfect catch, the fishing bar shrinks, making it easier to secure the fish quickly. Miss the perfect catch, though, and you lose that advantage. This rod is especially powerful when combined with luck-boosting items like the Alumina Larva.
Key stats:
95% lower speed
500% luck (highest in the game!)
0.1 control
30% resilience
Infinite max KG
It’s designed for endgame players who want to hunt for rare mutations and build their personal aquariums with colossal fish.

Using the Rod for Mutations and Aquarium Profits
The Ruinous Oath rod isn’t just for show—it’s a money-making machine! With its high luck stat, you have a better chance of catching mutated fish, which can be placed in your personal aquarium for hourly profit. For example, a Master Mutated Colossal Ancient Dragon can earn over 1 million per hour!
Tips for maximizing profits:
Aim for perfect catches to trigger mutations faster
Use Sundial Totems to spawn rare dragons
Appraise fish repeatedly for shiny-sparkly traits
Place high-value mutants in your aquarium for passive income
This rod can help you build an aquarium that generates millions every hour.
Final Tips for Grinding the Bestiary
Unlocking the Ruinous Oath rod is a grind, no doubt. You’ll need patience and a lot of cash for appraising. Use luck-boosting rods like the Righteous Rod to help fill your bestiary faster, and consider stacking totems for better mutation rates.
And that’s how you GET RUINOUS OATH ROD SHOWCASE in FISCH! It’s a game-changer for serious fishers. If you found this guide helpful, share it with your fishing crew! What’s the biggest fish you’ve caught so far? Let me know down below. Happy fishing!