A complete guide to obtaining the two new endgame rods in Fisch. Learn how to complete the Crimson Cavern Bestiary for the Ruinous Oath and how to trigger the Starfall event for the Cerulean Fang.
Table of Contents
The new update for Fisch has introduced two of the most powerful and sought-after items in the game’s history: the god-tier Ruinous Oath and the event-exclusive Cerulean Fang. Both of these endgame fishing rods offer incredible stats and unique abilities, but they are locked behind some of the most challenging and demanding quests the game has to offer.
This guide will provide a complete, side-by-side walkthrough for obtaining both of these legendary rods. We will break down each quest into manageable steps and provide a full analysis of each rod’s stats and performance, using detailed tables and lists to help you decide which one is right for you.
The Ruinous Oath: The Ultimate Challenge
The Ruinous Oath is, without a doubt, the new best rod in the game, but it demands absolute dedication to acquire.
How to Obtain the Ruinous Oath
The quest for this rod is a true test of an angler’s commitment to completing their collection.
- Prerequisite: You must first unlock the Crimson Cavern. This is done by giving a Crimson Sea Dragon to the NPC guarding the gate inside the Luminescent Cavern.
- The Main Task: The quest requires you to complete the entire Crimson Cavern Bestiary.
- The Ultimate Grind: This is not a simple completion. You must obtain and register both the Shiny and the Sparkling version of every single fish found in the Crimson Cavern.
- Final Purchase: After you have successfully completed the full Shiny and Sparkling Bestiary, the Ruinous Oath will become available for you to purchase from the Crimson King for $30 million.
Strategy for the Bestiary Grind
| Method | Description |
| Totems | Place down Shiny Totems and Sparkling Totems in the Crimson Cavern to significantly increase your chances of catching these rare variants directly. |
| Appraisal | This is the most reliable, though potentially expensive, method. Catch multiple copies of a fish, then repeatedly use the Appraise function. Each appraisal rerolls the fish’s variant, allowing you to eventually get both Shiny and Sparkling. |
Ruinous Oath Stats and Analysis
| Stat/Perk | Value | Analysis |
| Luck | 500% | The highest luck stat in the game, even surpassing the Polaris Serenade. Guarantees extremely rare catches. |
| Control | 0.1 | Extremely low control makes this rod very difficult to handle. It is designed for expert players who can manage the line perfectly. |
| Mastery Mutation | This incredible passive ability gives you an 18x value multiplier on your catches, making it the best rod for earning money. | |
| Rod Type | Slash Rod | Features instant catches and powerful “slash” animations that rapidly increase the progress bar. |
The Cerulean Fang: The Event-Locked Prize
The Cerulean Fang is another powerful endgame rod that is more accessible than the Ruinous Oath but is locked behind a rare, player-driven event.
How to Obtain the Cerulean Fang
This rod requires you to be in the right place at the right time.
- Location: Find the dormant rod resting on a tree inside the Luminescent Cavern.
- The Event: The rod can only be activated and purchased during a Starfall event.
- Triggering a Starfall: Starfall events can only be started by in-game admins or by a player who owns and uses a Starfall Totem. This totem is no longer obtainable, making it extremely rare.
- Strategy: The best way to get this rod is to join public servers or the official Fisch Discord and look for players who own a Starfall Totem and are willing to activate it for the server.
Cerulean Fang Stats and Analysis
| Stat/Perk | Value | Analysis |
| Luck | 190% | A very high luck stat that makes it excellent for catching rare and mythical fish. |
| Control | 25 | A high control stat makes this rod much more manageable and easier to use than the Ruinous Oath. |
| Price | $5 Million | While still expensive, it is significantly more affordable than the Ruinous Oath. |
| Mutation | Illuminescent Mutation | The rod comes with its own unique passive ability. |
Head-to-Head Comparison
| Feature | Ruinous Oath | Cerulean Fang |
| Best For | Maximum profit, hardcore endgame grind. | High-tier general fishing, admin events. |
| Difficulty to Obtain | Extremely High (requires 100% shiny/sparkling Bestiary completion). | High (requires finding a rare, player-triggered event). |
| Cost | 30 Million | 5 Million (only during a Starfall event). |
| Ease of Use | Very Difficult (0.1 Control). | Easy (25 Control). |
| Overall Power | The undisputed best rod in the game. | A powerful and more accessible alternative to the Ruinous Oath. |
Both of these rods represent the pinnacle of fishing in the game. For more guides on how to navigate the new areas where these rods are found, be sure to check out our Fisch category page.
- Fisch – How to Get All 5 Crimson King Fragments
- Fisch – Crimson King Fragment: All 5 Locations to Get the Evil Pitchfork Rod
- Fisch – Luminescent Cavern Update Codes: All New Working Codes
- Fisch – How to Obtain the Frozen Walnut
- Fisch – How to Obtain the Slate Tuna
- Fisch – How to Obtain the Golden Nessie
- Fisch – How to Obtain the Star
