RosenBerryRooms is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you.
How To Catch Cataclysmic Fish in Fisch (October 2025 Guide)
By: Osama
Updated On: October 15, 2025
Cataclysmic Fish are the rarest catches in Fisch Roblox, with only 5 unique species available during specific server events. These legendary fish offer massive XP rewards and sell for hundreds of thousands to millions of C$, but they require special conditions, specific bait, and powerful rods to catch. This comprehensive guide reveals all proven methods to catch every Cataclysmic Fish, along with expert strategies, optimal equipment setups, and event timing tips for October 2025.
Quick Reference: Cataclysmic Fish Overview
Fish Name
Event Type
Location
Preferred Bait
Progress Penalty
Ashclaw
Eruption Event
Roslit Volcano (lava)
Coal
-95% progress speed, -70 resilience
Lusca
Earthquake Event
Ocean
Meteor, Stag Beetle
-95% progress speed
Akkorokamui
Earthquake Event
Ocean
Meteor, Stag Beetle
-95% progress speed
Charybdis
Continental Drift Event
Ocean
Meteor, Stag Beetle
-95% progress speed
Skeletal Serpent
Atomic Nuke Event
Any location (nuke radius)
None
-97% locked progress speed
Understanding Cataclysmic Fish Mechanics
Cataclysmic Fish represent the pinnacle rarity in Fisch, offering unprecedented rewards but requiring exceptional preparation and timing. Unlike regular fish, these legendary catches cannot be obtained through normal fishing methods and are completely immune to most rod passive effects.
Contents
Key Characteristics:
Extreme Rarity: Each Cataclysmic Fish only appears during specific server events
Massive Penalties: All Cataclysmic Fish apply severe progress speed reductions (-95% to -97%)
Event-Locked: No normal fishing methods work - events are mandatory
Immunity to Passives: Rod of the Forgotten Fang, Rod of the Depths, and similar passives don't affect Cataclysmic catches
Visual Cues: When hooked, players see a Cataclysmic-Rarity exclamation point and hear a distinctive shimmering sound
Method 1: Cataclysmic Fish Hunt Events
The Cataclysmic Fish Hunt is the rarest but most versatile method for obtaining these legendary fish. This server-wide event can spawn any of the 5 Cataclysmic Fish randomly.
Spawn Mechanics
Base Chance: 0.00167% per second for the event to trigger
Player Bonus: Each active fisher in the same location increases spawn chance by 10%
Maximum Chance: Even with 20 players, spawn chance only reaches 0.01371%
Event Duration: Approximately 30 minutes once triggered
Random Selection: Only one Cataclysmic Fish type appears per event, chosen randomly
Strategy for Maximizing Hunt Chances
Group Fishing: Coordinate with other players to fish in the same location
High-Traffic Areas: Fish in popular spots like Moosewood or Roslit Bay
Patience is Key: These events are extremely rare - be prepared for long waits
Event Notifications: Join community Discords to get real-time event alerts
Preparation: Always carry appropriate bait and rods for any Cataclysmic Fish
Optimal Setup for Fish Hunt Events
Rod: Ruinous Oath, Luminescent Oath, or Seraphic for best performance
Bait: Carry Coal, Meteor, and Stag Beetle to cover all possibilities
Location: Ocean areas provide access to most Cataclysmic Fish types
Method 2: Eruption Events - Ashclaw Strategy
Ashclaw is the only Cataclysmic Fish that appears during volcanic eruption events at Roslit Volcano. This massive crab-like creature offers incredible rewards but requires specialized equipment and precise positioning.
Event Requirements
Location: Roslit Volcano, specifically in the lava near the central pillar
Coordinates: -1945, 275, 230 for optimal positioning
Trigger: Natural eruption cycle (cannot be forced with totems)
Community Effect: More players fishing in the volcano increases eruption frequency
Time/Weather: No preferences - fish anytime during eruption
Optimal Combo: Ruinous Oath + Beached Pearl + Coal bait
Combat Strategy
Ashclaw applies devastating penalties when hooked:
-95% Progress Speed: Makes reeling extremely slow
-70 Resilience: Reduces control and increases escape chance
Fighting Techniques:
Prioritize Control Over Speed: Focus on steady tension rather than rapid reeling
Maintain Higher Tension: Compensate for low resilience with tighter line control
Use Resilience Enchants: Blessed Song and similar enchants are crucial
Anticipate Erratic Movement: Ashclaw moves unpredictably across the fishing bar
Patience Required: The fight will be lengthy due to progress speed penalties
Rewards and Value
Base XP: 640,000 XP (massive leveling potential)
Value: 0.64 C$ per kg
Weight Range: 200,000 - 1,050,000 kg (average ~350,000 kg)
Average Payout: ~224,000 C$
Method 3: Earthquake Events - Ocean Cataclysmic Fish
Earthquake events enable players to catch two of the most valuable Cataclysmic Fish: Lusca and Akkorokamui. These massive oceanic creatures appear during seismic disturbances and require ocean-specific strategies.
Event Mechanics
Trigger: Random server-wide earthquake events
Duration: Limited time window during active earthquake
Location: Any ocean area in the game
Affected Fish: Lusca and Akkorokamui only
Lusca - The Three-Headed Terror
Characteristics:
Appearance: Terrifying three-headed combination of squid and shark, red in color
Appearance: Massive squid with glowing tentacles and crimson plates
Preferred Bait: Meteor or Stag Beetle
Time/Weather: No preferences
Progress Penalty: -95% progress speed when hooked
Optimal Setup:
Rod: Same as Lusca - high-tier performance rods
Bait: Meteor or Stag Beetle (equal effectiveness)
Enchants: Progress speed mitigation essential
Location: Any ocean during earthquake event
Ocean Event Strategy
Pre-Event Preparation: Stock Meteor bait before earthquake announcements
Positioning: Fish in deep ocean areas away from shorelines
Group Coordination: Multiple ocean fishers may increase event frequency
Rod Selection: Use rods specifically designed for ocean fishing
Enchant Focus: Prioritize enchants that counter progress speed penalties
Value Comparison
Fish
Average Weight
Value per kg
Average Payout
Base XP
Lusca
2,500,000 kg
0.08 C$
~200,000 C$
Substantial
Akkorokamui
2,500,000 kg
0.08 C$
~200,000 C$
Substantial
Method 4: Atomic Nuke Events - Skeletal Serpent
The Skeletal Serpent represents the most elusive Cataclysmic Fish, only appearing during the catastrophic aftermath of Atomic Nuke events. This bone-white leviathan offers the most challenging catch experience.
Event Mechanics
Trigger: Atomic Nuke server events
Spawn Chance: Fixed 0.05% chance during nuke fallout
Location: Any location within the atomic blast radius
Duration: Limited to the nuke's fallout period
Skeletal Serpent Characteristics
Appearance: Massive bony serpent with atomic energy glow
Preferred Bait: None (bait has no effect)
Time/Weather: No preferences
Progress Penalty: -97% locked progress speed (most severe penalty)
Unique Challenges
The Skeletal Serpent is fundamentally different from other Cataclysmic Fish:
No Bait Effectiveness: Traditional bait strategies don't work
Locked Progress Speed: The -97% penalty cannot be mitigated by most enchants
Extreme Rarity: Even during nuke events, only a 0.05% spawn chance
Universal Location: Can appear in any water body within blast radius
Optimal Strategy
Nuke Event Timing: Monitor for nuke event announcements
Location Selection: Fish in areas with good rod performance
Rod Choice: Use highest resilience rods available
Enchant Focus: Maximum resilience and control enchants
Persistence Required: Multiple nuke events may be needed for success
Equipment Recommendations
Primary Rod: Seraphic or Ruinous Oath for maximum stats
Essential Enchants: Blessed Song, any resilience-boosting enchants
Secondary Options: Rods with high base resilience stats
Bait Strategy: None needed - save inventory space for other supplies
Method 5: Continental Drift Events - Charybdis
Charybdis is unique among Cataclysmic Fish as it only appears during the special Continental Drift update events. This massive serpent-like sea monster represents a limited-time opportunity for dedicated fishers.
Duration: Event-dependent (typically limited time windows)
Charybdis Characteristics
Appearance: Massive serpent with wide tooth-filled mouth and jagged fins
Preferred Bait: Meteor or Stag Beetle
Time Preference: Nighttime only
Progress Penalty: -95% progress speed when hooked
Strategic Approach
Event Awareness: Stay informed about Continental Drift event schedules
Night Fishing: Only appears during nighttime hours
Ocean Positioning: Fish in deep ocean areas
Meteor Bait: Essential for reasonable catch rates
High-Performance Setup: Use best available rods and enchants
Optimal Equipment
Rod: Ruinous Oath or equivalent high-performance rod
Bait: Meteor (most effective option)
Enchants: Progress speed and resilience focus
Timing: Coordinate fishing for nighttime hours during event
Universal Equipment Guide for Cataclysmic Fishing
Success with Cataclysmic Fish depends heavily on proper equipment selection and preparation. This section covers the essential gear and optimization strategies for all Cataclysmic Fish encounters.
Rod Selection Hierarchy
S-Tier Rods (Optimal Performance):
Ruinous Oath: Best overall stats for Cataclysmic fishing
Luminescent Oath: Excellent resilience and progress speed
Seraphic: Balanced performance with high base stats
A-Tier Rods (Strong Performance):
Onirifalx: Good all-around performance, lava-safe for Ashclaw
Magma Rod: Essential for Ashclaw, decent performance otherwise
Reinforced Rod: Lava-safe option with solid stats
B-Tier Rods (Viable Alternatives):
Volcanic Rod: Lava-safe with moderate performance
Any rod with Invincible enchantment: Makes any rod lava-safe
Essential Enchantments
Priority Enchants for Cataclysmic Fishing:
Blessed Song: Provides significant stat boosts across the board
Resilience Enchants: Counter the severe resilience penalties
Progress Speed Enchants: Mitigate the extreme progress speed reductions
Control Enchants: Improve handling during difficult fights
Ineffective Enchants (Avoid):
Steady Enchant: Does not counter Cataclysmic progress penalties
Tempest Rod Passive: Ineffective against Cataclysmic fish penalties
Standard Luck Enchants: Minimal impact on Cataclysmic spawn rates
Bait Strategy by Fish Type
Fish
Primary Bait
Secondary Bait
Effectiveness
Ashclaw
Coal
None
High effectiveness
Lusca
Meteor
Stag Beetle
High/Moderate effectiveness
Akkorokamui
Meteor
Stag Beetle
High/Moderate effectiveness
Charybdis
Meteor
Stag Beetle
High/Moderate effectiveness
Skeletal Serpent
None
None
Bait ineffective
Location-Specific Preparation
Roslit Volcano (Ashclaw):
Lava-safe rod mandatory
Coal bait essential
Position at coordinates -1945, 275, 230
Prepare for extreme environmental penalties
Ocean Areas (Lusca, Akkorokamui, Charybdis):
High-performance ocean rods recommended
Meteor bait preferred
Deep ocean positioning for best results
Event timing critical for success
Any Location (Skeletal Serpent):
Nuke event timing essential
Highest resilience rods available
No bait preparation needed
Blast radius positioning important
Advanced Strategies and Pro Tips
Mastering Cataclysmic Fish requires more than just the right equipment - it demands advanced techniques, community coordination, and deep game knowledge. These professional strategies will significantly improve your success rate.
Event Timing and Coordination
Community Monitoring:
Discord Servers: Join official and community Fisch Discords for real-time event notifications
Social Media: Follow developer Twitter accounts for event announcements
In-Game Communication: Coordinate with other players for group fishing efforts
Event Patterns: Study historical event timing to predict future occurrences
Group Fishing Benefits:
Increased Spawn Rates: More players fishing = higher event chances
Information Sharing: Pool knowledge about event locations and timing
Resource Distribution: Share rare bait and specialized equipment
Success Celebration: Community achievement when someone catches a Cataclysmic Fish
Economic Considerations
Investment vs. Return Analysis:
High Initial Cost: Cataclysmic fishing requires expensive rods and bait
Massive Returns: Successful catches yield 200,000+ C$ each
XP Value: Unmatched leveling potential from single catches
Long-Term Profit: Even with low success rates, potential profits are substantial
Resource Management:
Bait Conservation: Use expensive bait only during confirmed events
Rod Maintenance: Keep high-tier rods in optimal condition
Inventory Optimization: Balance bait, rods, and catch storage
Market Timing: Sell catches during peak demand periods
Technical Execution
Fighting Mechanics Mastery:
Tension Control: Master the art of maintaining optimal line tension
Bar Management: Learn to predict and counter erratic fish movements
Timing Precision: Develop perfect timing for hook sets and reel management
Penalty Adaptation: Adjust technique for different progress speed penalties
Environmental Awareness:
Position Optimization: Always fish from optimal coordinates
Weather Monitoring: Track weather conditions that might affect events
Time Management: Coordinate fishing with preferred time windows
Server Selection: Choose servers with active player populations
Common Mistakes to Avoid
Equipment Errors:
Wrong Rod Type: Using non-lava-safe rods for Ashclaw attempts
Inadequate Enchants: Failing to counter specific penalties
Bait Mismanagement: Using ineffective bait for target fish
Poor Rod Maintenance: Using damaged or low-quality equipment
Strategic Mistakes:
Solo Attempts: Trying to trigger events without group coordination
Poor Timing: Fishing outside event windows or preferred times
Wrong Location: Fishing in incorrect areas for target Cataclysmic Fish
Impatience: Giving up too quickly during rare event windows
Resource Management Errors:
Bait Waste: Using expensive bait outside confirmed events
Rod Overuse: Damaging high-tier rods on unsuccessful attempts
Inventory Mismanagement: Running out of essential supplies during events
Poor Market Timing: Selling catches during low-demand periods
Community Resources and Official Channels
Staying connected with the Fisch community and official channels is essential for maximizing your Cataclysmic fishing success. These resources provide real-time event notifications, strategy discussions, and exclusive developer insights.
Official Game Channels
Developer Resources:
Official Discord: Join the official Fisch Discord server for real-time event announcements, developer Q&A sessions, and community coordination. This is the most reliable source for Cataclysmic Fish event notifications.
Developer Twitter: Follow the official Fisch Twitter account for patch notes, event schedules, and developer insights about Cataclysmic Fish mechanics.
Official Website: Check the Fisch official website for comprehensive patch notes, event calendars, and official guides about rare fish mechanics.
Community Platforms
Reddit Communities:
r/Fisch: The main Fisch subreddit is an excellent resource for player strategies, event coordination, and community discussions about Cataclysmic Fish hunting techniques.
r/RobloxFisch: A specialized community for Roblox Fisch players focusing specifically on the Roblox version, including detailed Cataclysmic Fish guides.
Fan Communities:
Fisch Wiki: The official Fisch Wiki provides comprehensive, verified information about all Cataclysmic Fish, including spawn mechanics, preferred conditions, and detailed statistics.
Fandom Wiki: The Fisch Fandom Wiki offers community-curated guides, player tips, and detailed information about Cataclysmic Fish hunting strategies.
Social Media Groups:
Facebook Groups: Join Fisch-focused Facebook groups for event coordination and strategy sharing
TikTok Creators: Follow Fisch content creators for visual guides and real-time event coverage
Twitch Streams: Watch live Fisch gameplay streams featuring Cataclysmic Fish attempts and successful catches
Spawn Calculators: Tools for calculating Cataclysmic Fish spawn probabilities
Coordination Channels: Dedicated Discord channels for organizing group fishing events
Alert Systems: Bot-based notification systems for event triggers
Value of Each Resource
Official Channels:
Discord: Essential for real-time event notifications and developer communication
Twitter: Best for quick updates and event announcements
Website: Comprehensive official information and patch notes
YouTube: Visual learning and developer insights
Community Resources:
Reddit: Strategy discussions and community coordination
Wikis: Detailed, verified information and mechanics explanations
Social Media: Visual guides and real-time event coverage
Streaming Platforms: Live demonstrations and community interaction
Frequently Asked Questions
General Questions
Q: What are Cataclysmic Fish in Fisch? A: Cataclysmic Fish are the rarest fish type in Fisch Roblox, consisting of 5 unique species that only appear during specific server events. They offer massive XP rewards and high sell values but require special conditions and equipment to catch.
Q: How many Cataclysmic Fish are there in Fisch? A: There are currently 5 Cataclysmic Fish: Ashclaw, Lusca, Akkorokamui, Charybdis, and Skeletal Serpent. Each has unique spawn conditions, preferred bait, and appearance characteristics.
Q: Do I need to catch Cataclysmic Fish to complete the Bestiary? A: No, Cataclysmic Fish are not required to complete their respective Bestiary pages. They are optional prestige catches designed for dedicated players seeking maximum rewards and collection completion.
Catching Mechanics
Q: Can I catch Cataclysmic Fish outside of events? A: No, Cataclysmic Fish can only be caught during specific server events. Normal fishing methods will never yield Cataclysmic Fish - events are mandatory for all 5 species.
Q: Why do Cataclysmic Fish have such severe progress penalties? A: The extreme progress penalties (-95% to -97%) are designed to make Cataclysmic Fish challenging boss-level encounters rather than regular fish catches. These penalties ensure that only properly prepared players can succeed.
Q: Do rod passives work on Cataclysmic Fish? A: Most rod passives do not work on Cataclysmic Fish. Rods like Rod of the Forgotten Fang, Rod of the Eternal King, and Rod of the Depths have their passive effects disabled when attempting to catch Cataclysmic Fish.
Equipment and Preparation
Q: What's the best rod for Cataclysmic Fish? A: The Ruinous Oath is generally considered the best rod for Cataclysmic fishing due to its excellent overall stats. However, specific rods like Magma Rod or Reinforced Rod are required for Ashclaw due to lava fishing requirements.
Q: Which bait should I use for Cataclysmic Fish? A: Bait effectiveness varies by fish: Ashclaw prefers Coal, Lusca/Akkorokamui/Charybdis prefer Meteor or Stag Beetle, and Skeletal Serpent is unaffected by bait. Always use the preferred bait for your target fish during events.
Q: What enchants are most effective for Cataclysmic fishing? A: Blessed Song is the most valuable enchant for Cataclysmic fishing. Focus on resilience and progress speed enchants to counter the severe penalties. Avoid Steady enchant and Tempest Rod passive as they don't work against Cataclysmic penalties.
Event-Specific Questions
Q: How often do Cataclysmic Fish events occur? A: Event frequency varies significantly. Cataclysmic Fish Hunt events have a 0.00167% base chance per second, while other events like Eruptions, Earthquakes, and Atomic Nukes follow their own spawn patterns. Events are generally rare and unpredictable.
Q: Can I force Cataclysmic Fish events to spawn? A: No, Cataclysmic Fish events cannot be forced or manipulated. They spawn randomly based on server mechanics, though having more players fishing in the same area can slightly increase spawn chances for some events.
Q: How long do Cataclysmic Fish events last? A: Event durations vary: Cataclysmic Fish Hunt events last about 30 minutes, while other events like Eruptions, Earthquakes, and Atomic Nukes have their own specific duration timers. Always be prepared to fish immediately when events are announced.
Rewards and Value
Q: How much are Cataclysmic Fish worth? A: Cataclysmic Fish values range from approximately 200,000 to 224,000 C$ on average, with some individual catches reaching over 1 million C$ depending on weight and mutations.
Q: How much XP do Cataclysmic Fish give? A: Cataclysmic Fish provide massive XP rewards, with Ashclaw alone giving 640,000 base XP. This makes them extremely valuable for rapid leveling and character progression.
Q: Are Cataclysmic Fish worth the effort? A: For dedicated players, yes. Despite the extreme rarity and preparation required, the massive XP rewards and high sell values make Cataclysmic Fish among the most worthwhile targets in Fisch for long-term progression and wealth accumulation.
Conclusion: Mastering Cataclysmic Fish Hunting
Catching Cataclysmic Fish in Fisch represents the ultimate challenge and reward in the game. These legendary creatures demand patience, preparation, and persistence, but offer unparalleled returns in both XP progression and in-game wealth. Success requires mastering multiple event types, optimizing equipment setups, and understanding the unique mechanics of each of the 5 Cataclysmic Fish species.
Key Takeaways for Success
Essential Preparation:
Invest in high-tier rods like Ruinous Oath or Luminescent Oath
Stock appropriate bait for target Cataclysmic Fish (Coal for Ashclaw, Meteor for ocean species)
Join community Discords for real-time event notifications
Coordinate with other players to increase event spawn chances
Event Mastery:
Understand the specific conditions for each Cataclysmic Fish type
Position correctly for each event (volcano for Ashclaw, ocean for others)
Time your fishing with preferred conditions (day/night requirements)
Be prepared to drop everything and fish when events occur
Technical Excellence:
Master tension control and bar management during fights
Adapt to extreme progress speed penalties (-95% to -97%)
Use appropriate enchants to counter specific penalties
Maintain equipment in optimal condition for maximum performance
The Path to Cataclysmic Mastery
Becoming a Cataclysmic Fish master is a journey that transforms you from a regular fisher into a legendary angler. Each successful catch represents not just material rewards, but mastery of Fisch's most challenging content. The skills you develop - event timing, equipment optimization, technical execution, and community coordination - will serve you throughout your Fisch journey.
Final Recommendations
Start with Ashclaw: The Eruption events, while rare, offer more predictable conditions than other Cataclysmic Fish events
Build Community Connections: Success in Cataclysmic fishing often depends on community coordination and information sharing
Invest in Quality Equipment: High-tier rods and appropriate enchants are not optional - they're essential
Practice Patience: Cataclysmic Fish are rare by design - expect long periods between successful catches
Celebrate Each Success: Each Cataclysmic Fish catch represents a significant achievement worthy of celebration
The world of Cataclysmic Fish hunting in Fisch offers endless challenge and reward for those willing to master its complexities. With the knowledge from this comprehensive guide, you're now equipped to join the elite ranks of Cataclysmic Fish masters. Prepare your rods, stock your bait, and may the events be ever in your favor as you embark on the ultimate Fisch fishing adventure in October 2025!
Ready to test your Cataclysmic fishing skills? Join our community Discord for real-time event alerts and group hunting coordination. Bookmark this guide for quick reference during events, and share your success stories with fellow anglers!
RosenberryRooms is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.