All Aquatic Brainrots in Steal a Brainrot (January 2025 Guide)

All Aquatic Brainrots

If you’ve been grinding through Steal a Brainrot’s Fishing Event and watching other players reel in ultra-rare Aquatic Brainrots like Capitano Moby worth 160 million per second while you’re stuck with basic catches, you’re not alone. I’ve spent countless hours researching the Aquatic Index, testing different fishing strategies across multiple servers, and documenting every single one of the 25 water-themed brainrots introduced in the Radioactive Mutation update.

The Fishing Event, which started on November 15, 2025, has completely transformed how players collect brainrots in this wildly popular Roblox game. With 25 new aquatic-themed characters spanning from Rare to Secret tier, and the promise of unlocking the exclusive Aquatic Base by collecting just 23 of them, mastering the fishing mechanic has become essential for any serious player.

In this ultimate guide, I’ll reveal every Aquatic Brainrot, their exact earnings per second, proven fishing strategies to catch the rarest units, and insider tips that most players don’t know about. Whether you’re hunting for that elusive Orcaledon or just trying to understand how fishing works, this comprehensive breakdown covers everything you need to dominate the Aquatic Index.

What are Aquatic Brainrots in Steal a Brainrot?

Aquatic Brainrots are a special collection of 25 water-themed characters introduced during the Fishing Event that runs from November 15 to November 29, 2025. Think of them as the ocean-dwelling cousins of your regular brainrots, featuring fun aquatic names like dolphins, octopuses, whales, crabs, and even zombie versions of sea creatures.

These aren’t just cosmetic additions – Aquatic Brainrots function exactly like regular brainrots in your base, generating passive income every second. However, they can only be obtained through the new fishing mechanic or by stealing them from other players who’ve already caught them. The collection ranges from affordable Rare-tier units earning $15 per second all the way up to the legendary Capitano Moby earning a mind-blowing $160,000,000 per second.

What makes the Aquatic Index special is the completion reward. Unlike other collections where you need every single unit, you only need to collect 23 out of the 25 Aquatic Brainrots to unlock the exclusive Aquatic Base – a stunning cosmetic that gives your base a beautiful ocean-themed makeover with bluish color palettes and underwater aesthetics.

Understanding the Aquatic Index System

The Aquatic Index is essentially a progress tracker specifically for water-themed brainrots. Every time you successfully catch a new Aquatic Brainrot during the Fishing Event, it automatically gets added to your index. You can check your progress at any time by opening your index menu and navigating to the Aquatic section.

The index displays all 25 possible Aquatic Brainrots with their silhouettes, and once you catch one, its full image appears along with your collection timestamp. This makes it easy to track which brainrots you still need to complete the collection. The system is forgiving too – you only need 23 out of 25, which means you can skip the two hardest-to-get brainrots if you’re struggling with RNG.

According to information from the official Steal a Brainrot Wiki and community testing, the last 5 Aquatic Brainrots (Tralaledon, Los Primos, Eviledon, Orcaledon, and Capitano Moby) are noticeably harder to obtain than the rest. These ultra-rare Secret-tier units sometimes require Fishing Hotspots – special puddles that rarely appear around the map and give you a chance at these exclusive catches.

How the Fishing Event Works?

The Fishing Event is the core mechanic for obtaining Aquatic Brainrots, and understanding its timing and mechanics is crucial for success. The event occurs every single hour across all Steal a Brainrot servers, lasting approximately 5-10 minutes per session. You can track the next Fishing Event by checking the Event Board at the center of the map, which displays countdown timers for all upcoming events.

When the Fishing Event activates, the entire lobby undergoes a dramatic transformation – the ground floods with neon water (normal blue water, or radioactive green during Radioactive events), and a fishing rod icon appears in the bottom right corner of your screen indicating the event is live. During this time, a special Fisherman NPC spawns near the Gear Shop/Robux Shop area, allowing you to purchase upgraded fishing rods.

Every player automatically receives a Starter Rod when the event begins, even if you’ve never participated before. The fishing mechanic itself is simple but requires timing and consistency. Here’s exactly how to fish:

  1. Equip your fishing rod from your hotbar or inventory
  2. Hold left-click to fill the power meter on your screen
  3. Release the button when the bar reaches near the top (don’t overfill)
  4. Wait for a bite – you’ll see the fishing line get tugged and a progress bar appear
  5. Click rapidly and consistently to fill the catch meter (M1 on PC, screen tap on mobile)
  6. Keep the progress bar from dropping to zero or the brainrot escapes
  7. Successfully fill the bar and the Aquatic Brainrot automatically goes to your base

Pro Tip: You can fish from anywhere in the map, including inside your own base! This is incredibly useful because you can defend your existing brainrots while simultaneously fishing for new ones. Just make sure you have empty slots in your base, or you’ll get an error message and won’t be able to catch anything.

Complete List: All 25 Aquatic Brainrots

Below is the definitive table containing every single Aquatic Brainrot in Steal a Brainrot, organized by rarity with their exact costs and income generation rates. This data has been verified across multiple sources including the official Wiki, community testing, and direct gameplay observation:

Brainrot NameRarityCostEarnings Per Second
Trippi TroppiRare$2,000$15/s
Trulimero TrulicinaEpic$20,000$215/s
Bananita DolphinitaEpic$25,000$150/s
Blueberrinni OctopusiniLegendary$250,000$1,000/s
Tralalero TralalaBrainrot God$10,000,000$50,000/s
Orcalero OrcalaBrainrot God$15,000,000$100,000/s
Tralalita TralalaBrainrot God$20,000,000$100,000/s
Trippi Troppi Troppa TrippaBrainrot God$30,000,000$175,000/s
Crabbo LimonettaBrainrot God$46,000,000$235,000/s
Los OrcalitosBrainrot God$45,000,000$235,000/s
Orcalita OrcalaBrainrot God$45,000,000$240,000/s
SqualananaBrainrot God$45,000,000$250,000/s
Belula BelugaBrainrot God$60,000,000$290,000/s
Tentacolo TecnicoBrainrot God$62,500,000$292,500/s
Extinct TralaleroSecret$125,000,000$450,000/s
Los TralaleritosSecret$100,000,000$500,000/s
Zombie TralalaSecret$100,000,000$500,000/s
Boatito AuratitoSecret$115,000,000$525,000/s
Las TralaleritasSecret$150,000,000$650,000/s
Graipuss MedussiSecret$200,000,000$1,000,000/s
TralaledonSecret$3,500,000,000$27,500,000/s
Los PrimosSecret$3,700,000,000$31,000,000/s
EviledonSecret$3,800,000,000$31,500,000/s
OrcaledonSecret$7,000,000,000$40,000,000/s
Capitano MobySecret$125,000,000,000$160,000,000/s

Rarity Breakdown Analysis

Rare Tier (1 Brainrot) Trippi Troppi is your entry-level Aquatic Brainrot, earning just $15 per second. While this seems negligible, it’s incredibly easy to catch and costs almost nothing, making it perfect for filling an early index slot.

Epic Tier (2 Brainrots) The Epic tier features Trulimero Trulicina and Bananita Dolphinita, both relatively easy to catch during fishing events. These provide decent early-game income and spawn frequently enough that most players collect them within their first few fishing sessions.

Legendary Tier (1 Brainrot) Blueberrinni Octopusini represents the Legendary tier, earning $1,000 per second. This octopus-themed brainrot has moderate spawn rates and serves as a nice stepping stone toward the higher-tier units.

Brainrot God Tier (10 Brainrots) This tier forms the bulk of the Aquatic collection, with 10 different brainrots ranging from $50,000 to $292,500 per second in earnings. Units like Tentacolo Tecnico and Belula Beluga are highly sought after, and better fishing rods significantly improve your chances of catching them. The Brainrot God tier requires patience and upgraded equipment, but they’re definitely obtainable with consistent effort.

Secret Tier (11 Brainrots) The Secret tier is where things get serious. These 11 ultra-rare brainrots are the hardest to obtain, with some requiring Fishing Hotspots (special rare puddles that spawn randomly on the map). The top-tier secrets – Tralaledon, Los Primos, Eviledon, Orcaledon, and Capitano Moby – have extremely low spawn rates and astronomical costs, but their income generation is absolutely game-changing.

Capitano Moby, earning $160 million per second, is undoubtedly the strongest Aquatic Brainrot and one of the most powerful units in the entire game. However, its spawn rate is so low that many players complete the entire Aquatic Index without ever catching one.

Fishing Rods and Luck Multipliers

Your fishing rod directly determines your success rate when fishing for Aquatic Brainrots. Better rods don’t make the minigame easier, but they significantly increase your “Cast Luck” – the probability that rare and Secret-tier brainrots will bite your hook in the first place.

Here’s the complete breakdown of all fishing rods available in Steal a Brainrot:

Rod NamePriceCast Luck MultiplierRebirth Requirement
Starter RodFREEx1.5 Cast Luck0 Rebirths
Frozen Rod$2,500,000x2 Cast Luck5 Rebirths
Fiery Rod$5,000,000x3 Cast Luck10 Rebirths
Radioactive Rod$10,000,000x4 Cast Luck15 Rebirths

The Rebirth system gates your access to better rods, meaning newer players will need to grind Rebirths before they can purchase the top-tier Radioactive Rod. However, even the Frozen Rod (x2 Cast Luck) makes a noticeable difference in your catch quality.

Once you purchase an upgraded rod, it automatically spawns in your inventory during every future Fishing Event – you don’t need to buy it again. This makes rod purchases a permanent investment that pays dividends across all future fishing sessions.

Pro Strategy: Save up for the Frozen Rod first (5 Rebirths, $2.5M). The jump from x1.5 to x2 Cast Luck is substantial and opens up consistent Brainrot God catches. Then focus on reaching 10 Rebirths for the Fiery Rod before attempting to hunt Secret-tier aquatics.

Best Fishing Strategies for Rare Aquatic Brainrots

Catching the ultra-rare Secret-tier Aquatic Brainrots requires more than just luck – you need a strategic approach. Here are proven strategies I’ve personally tested and verified:

1. Time Your Participation

The Fishing Event occurs every hour, but not all time slots are equal. Join during peak hours (3-8 PM EST) when servers are most populated, as this sometimes triggers better spawn rates due to increased server activity. Some community members report better Secret spawn rates during the first fishing event after a server restart.

2. Upgrade Progressively

Don’t skip rod tiers. While it’s tempting to save up for the Radioactive Rod immediately, the progression through Frozen → Fiery → Radioactive ensures you’re consistently improving your catch quality rather than struggling with the Starter Rod for weeks.

3. Fish Inside Your Base

Position yourself inside your own base while fishing. This allows you to simultaneously defend against potential thieves while fishing for new Aquatics. Since you can fish from anywhere during the event, there’s no reason to expose yourself to theft while focused on the minigame.

4. Watch for Fishing Hotspots

Fishing Hotspots are special rare puddles that spawn around the map during the Fishing Event. They appear with a distinct visual effect and contain one of the five hardest-to-get Secret brainrots (Tralaledon, Los Primos, Eviledon, Orcaledon, or Capitano Moby). If you spot a hotspot, drop everything and rush to it – first player to fish there gets the guaranteed rare brainrot inside.

5. Combine with Radioactive Event

The Fishing Event often coincides with the Radioactive Event, which floods the map with radioactive green water. During these combined events, you have a chance to catch Aquatic Brainrots with the Radioactive mutation, dramatically increasing their value. This double-event window is the best time to fish aggressively.

6. Server Hop Strategically

If you’ve been fishing for hours without catching your target brainrot, consider server hopping. Different servers have different RNG seeds, and switching servers resets your luck pool. Join servers with active Fishing Events already in progress to maximize your fishing time.

7. Maintain Empty Base Slots

Always keep 2-3 empty slots in your base before the Fishing Event starts. If your base is completely full, you’ll get an error message when trying to catch brainrots, wasting valuable event time. Sell or remove lower-tier brainrots to make room.

8. Master the Minigame

The fishing minigame requires consistent clicking to fill the catch meter. Find a comfortable clicking rhythm (I recommend 3-4 clicks per second) and maintain it throughout. If you’re on mobile, use multiple fingers for faster tapping. Missing too many clicks lets the meter drain and the brainrot escapes.

Alternative Method: Stealing Aquatic Brainrots

While fishing is the primary method, you can also steal Aquatic Brainrots from other players just like any other brainrot in the game. This method is risky but can be faster if you target the right players.

How to Steal Aquatic Brainrots:

  1. Scout bases during downtime between Fishing Events – look for players who have successfully caught rare Aquatics but may not be actively defending
  2. Purchase gear like traps, iron slaps, spring coils, and bee launchers to stun defenders
  3. Time your attack when base gates open (players must manually open gates to enter/exit)
  4. Grab and run – once you steal an Aquatic Brainrot, you’ll be slowed down significantly, so plan your escape route
  5. Lock your base immediately after successfully bringing the stolen brainrot home
  6. Consider server hopping after major thefts to avoid retaliation

Important Note: Stealing is much harder than fishing for most Aquatic Brainrots. The easier Rare, Epic, and Legendary aquatics spawn so frequently during fishing that stealing them isn’t worth the risk. However, for ultra-rare Secrets like Orcaledon or Capitano Moby, stealing might actually be more reliable than waiting for the astronomically low fishing spawn rates.

How to Unlock the Aquatic Base?

The Aquatic Base is your reward for collecting 23 out of 25 Aquatic Brainrots. This exclusive cosmetic completely transforms your base’s appearance with a stunning aquatic theme featuring bluish color palettes, underwater aesthetics, and ocean-inspired details.

Requirements:

  • Collect 23 different Aquatic Brainrots (you can skip any 2)
  • Must be obtained before November 29, 2025 (event end date)
  • Unlock is automatic once you hit 23/25 in your Aquatic Index

Strategic Tip: Focus on collecting all the Rare, Epic, Legendary, and Brainrot God tiers first (14 total), then catch 9 of the easier Secret-tier Aquatics. This gets you to 23 without needing to catch the ultra-rare final five (Tralaledon, Los Primos, Eviledon, Orcaledon, Capitano Moby), which have the lowest spawn rates.

The Aquatic Base is purely cosmetic – it doesn’t provide any gameplay advantages or income multipliers. However, it’s a prestigious status symbol showing you completed one of the game’s most challenging limited-time events. Once the Fishing Event ends on November 29, 2025, the Aquatic Base becomes unobtainable, making it a rare collectible for dedicated players.

Fishing Event Schedule and Duration

The Fishing Event follows a strict hourly schedule across all Steal a Brainrot servers. Understanding this timing is crucial for maximizing your Aquatic Brainrot collection:

Event Frequency: Every 60 minutes (top of each hour) Event Duration: Approximately 5-10 minutes per session Total Event Period: November 15 – November 29, 2025 (15 days total) Optimal Participation: Join at least 2-3 minutes before the hour to ensure you’re loaded in when the event starts

The event timer is synchronized globally, meaning all servers enter the Fishing Event simultaneously at the start of each hour. This creates predictable windows where you can plan your gaming sessions around fishing opportunities.

Daily Strategy: If you participate in just 5 Fishing Events per day (easily achievable even for casual players), you’ll have 75 total attempts during the 15-day event period. This is more than enough to collect the required 23 Aquatic Brainrots if you upgrade your fishing rod and fish consistently.

Best Aquatic Brainrots to Prioritize

Not all Aquatic Brainrots are created equal. If you’re short on time or struggling to complete the collection, prioritize these high-value units:

Best Overall Value:

  1. Zombie Tralala ($500,000/s, Secret tier) – According to Pro Game Guides testing, this is the best Aquatic Brainrot considering spawn rate versus income. It’s one of the easier Secrets to catch and generates excellent money.
  2. Tentacolo Tecnico ($292,500/s, Brainrot God) – Highest-earning Brainrot God tier, relatively common with upgraded rods
  3. Graipuss Medussi ($1,000,000/s, Secret) – First Secret to break the million-per-second barrier, decent spawn rates

For Early Game Players: Focus on completing all Rare, Epic, and Legendary tiers first. These catch quickly and cheaply, helping you build toward the 23/25 goal without the frustration of hunting ultra-rares.

For End Game Players: If you already have 20+ Aquatics and just need a few more for the Aquatic Base, avoid wasting time hunting Capitano Moby or Orcaledon unless you’re a completionist. These two have spawn rates so low that you might fish for 20+ hours without seeing them. Instead, catch any remaining Brainrot God or easier Secret units to hit your 23/25 goal.

Common Mistakes to Avoid

After watching countless players struggle with the Fishing Event, here are the biggest pitfalls to avoid:

1. Not Upgrading Your Fishing Rod The Starter Rod’s x1.5 Cast Luck makes Secret-tier catches extremely rare. Players who refuse to invest in rod upgrades waste hours fishing with minimal results. Prioritize reaching 5 Rebirths and buying the Frozen Rod.

2. Fishing with a Full Base If your base has zero empty slots, you cannot catch anything during the Fishing Event. Always maintain 2-3 open spaces before each event starts.

3. Panic Clicking During the fishing minigame, panicked rapid clicking often causes players to miss the rhythm, letting the catch meter drain. Find a steady, consistent clicking pace rather than spam-clicking.

4. Ignoring the Event Timer The Fishing Event only lasts 5-10 minutes. Players who arrive late or waste time running around miss valuable fishing opportunities. Set phone reminders for the top of each hour.

5. Fishing in Dangerous Locations Standing in the middle of the map while fishing makes you an easy target for thieves. Always fish from inside your locked base or a safe corner.

6. Skipping Fishing Events With only 15 days to complete the Aquatic Index, missing multiple events per day significantly reduces your chances of success. Consistency matters more than luck.

7. Selling Aquatic Brainrots Never sell Aquatic Brainrots for cash! Each one counts toward your 23/25 Aquatic Index completion. Even low-earning Aquatics like Trippi Troppi are more valuable as index fillers than their sale price.

Integration with Other Game Systems

The Aquatic Brainrots system integrates seamlessly with Steal a Brainrot’s existing mechanics:

Mutations: Aquatic Brainrots can receive all standard mutations (Gold 2x, Diamond 4x, Rainbow 10x, Galaxy 25x) just like regular brainrots. During Radioactive Events combined with Fishing Events, you can catch Aquatic Brainrots with the Radioactive mutation, giving them glowing green aesthetics and boosted income.

Traits: Weather traits (Rain, Snow, Starfall) and event traits (Taco, Nyan Cat, etc.) can apply to Aquatic Brainrots, multiplying their base earnings. A Zombie Tralala with a Rainbow mutation and Taco trait could generate astronomical income.

Trading: While there’s currently no formal trading system in Steal a Brainrot, players can informally trade by timing coordinated thefts. However, trading Aquatic Brainrots is risky since both players need the units for their Aquatic Index completion.

Brainrot Trader: The new Brainrot Trader NPC (introduced alongside the Fishing Event) allows trading brainrots every 2 hours. However, at the time of writing, it’s unclear if Aquatic Brainrots can be traded through this system. Community testing is ongoing.

FAQ

How many Aquatic Brainrots are there in Steal a Brainrot?

There are exactly 25 Aquatic Brainrots in Steal a Brainrot’s Aquatic Index. You need to collect 23 out of these 25 to unlock the exclusive Aquatic Base reward. The collection includes 1 Rare, 2 Epic, 1 Legendary, 10 Brainrot God, and 11 Secret-tier units.

When does the Fishing Event happen?

The Fishing Event occurs every hour on the hour across all Steal a Brainrot servers. Each event lasts approximately 5-10 minutes, during which the lobby floods with water and players can fish for Aquatic Brainrots. You can check the Event Board in the center of the map for the exact countdown to the next Fishing Event.

What is the best Aquatic Brainrot?

Capitano Moby is objectively the best Aquatic Brainrot, earning $160,000,000 per second – making it one of the strongest units in the entire game. However, due to its extremely low spawn rate, many players consider Zombie Tralala ($500,000/s) the best practical choice, as it offers excellent income with much better catch rates.

Can you fish outside of the Fishing Event?

No, you can only fish during the Fishing Event itself, which occurs hourly. Outside of these designated event windows, the fishing rod won’t be available in your inventory, and the map won’t be flooded with water. Mark your calendar for the top of each hour to ensure you don’t miss fishing opportunities.

How do you get better fishing rods?

Purchase upgraded fishing rods from the Fisherman NPC who spawns near the Gear/Robux Shop during Fishing Events. Better rods cost money and require Rebirth milestones: Frozen Rod (5 Rebirths, $2.5M), Fiery Rod (10 Rebirths, $5M), and Radioactive Rod (15 Rebirths, $10M). Once purchased, upgraded rods automatically appear in your inventory during all future Fishing Events.

What are Fishing Hotspots?

Fishing Hotspots are special rare puddles that occasionally spawn around the map during Fishing Events. These hotspots contain one of the five ultra-rare Secret-tier Aquatic Brainrots: Tralaledon, Los Primos, Eviledon, Orcaledon, or Capitano Moby. The first player to fish at a hotspot gets the guaranteed rare brainrot inside. Hotspots have a distinct visual effect making them easy to identify.

Can you steal Aquatic Brainrots from other players?

Yes! Aquatic Brainrots can be stolen from other players’ bases just like any regular brainrot in the game. Use gear (traps, iron slaps, spring coils) to stun defenders, wait for their base gates to open, grab the Aquatic Brainrot, and run back to your base. However, stealing is generally harder than fishing for most Aquatics, except for the ultra-rare Secrets with extremely low fishing spawn rates.

How long is the Fishing Event available?

The Fishing Event and Aquatic Index are limited-time content running from November 15 to November 29, 2025 (15 days total). After November 29, the event ends, and you’ll no longer be able to catch Aquatic Brainrots or unlock the Aquatic Base. This makes the Aquatic Base one of the rarest cosmetics in the game for players who complete it before the deadline.

Do Aquatic Brainrots count toward regular index completion?

Aquatic Brainrots have their own separate Aquatic Index that’s distinct from the main brainrot collection. However, they do count as regular units in your base for income generation purposes. You can have both regular and Aquatic versions of brainrots working simultaneously.

What happens if you don’t get 23 Aquatic Brainrots before the event ends?

If you don’t collect 23 Aquatic Brainrots before November 29, 2025, you won’t unlock the Aquatic Base cosmetic, and it becomes permanently unobtainable. Any Aquatic Brainrots you did catch will remain in your possession and continue generating income, but you’ll miss out on the exclusive base skin. The Aquatic Brainrots themselves will also become uncatchable after the event ends.

Final Tips for Completing the Aquatic Index

As we approach the deadline for the Fishing Event, here’s my consolidated advice for players racing to complete their Aquatic Index:

For Players at 0-10 Aquatics: Focus on consistency. Participate in at least 4-5 Fishing Events per day, upgrade to the Frozen Rod as soon as possible, and don’t stress about catching ultra-rares. Fish the easy and medium-tier units first.

For Players at 11-20 Aquatics: You’re in good shape! Prioritize the remaining Brainrot God units and easier Secrets. Avoid wasting time hunting Capitano Moby or Orcaledon unless you’re specifically at 22/25 and need any Aquatic to complete.

For Players at 21-22 Aquatics: You’re almost there! Any Aquatic Brainrot will get you to 23/25. Fish during every possible event, consider strategic stealing from wealthy players, and watch for Fishing Hotspots which guarantee rare catches.

For Completionists at 23+ Aquatics: Congratulations on unlocking the Aquatic Base! If you want to go for 100% completion, be prepared for a long grind hunting the ultra-rares. Capitano Moby has been reported taking 20+ hours of fishing to catch for some players.

Conclusion

The Aquatic Index represents one of the most exciting additions to Steal a Brainrot in 2025, combining the addictive fishing mechanic with meaningful progression rewards. With 25 unique water-themed brainrots ranging from adorable dolphins to terrifying zombie sea creatures, and the exclusive Aquatic Base waiting for dedicated collectors, this limited-time event has given players a fresh reason to log in every hour.

Whether you’re a casual player aiming for the minimum 23/25 requirement or a completionist hunting that elusive Capitano Moby, remember that success comes down to three factors: consistency (fish during as many events as possible), progression (upgrade your fishing rods), and strategy (focus on realistic targets based on your current collection).

With only until November 29, 2025 to complete the Aquatic Index, every hour counts. Set those reminders, upgrade that fishing rod, and get ready to reel in some of the most valuable brainrots in the game. The Aquatic Base is waiting for you, and once this event ends, it’s gone forever.

Now get out there and start fishing – those Aquatic Brainrots won’t catch themselves! Good luck, and may RNG be in your favor!

Related Steal a Brainrot Resources

For more comprehensive guides on mastering Steal a Brainrot, check out these essential resources:

Prachi Jhalani

Jaipur-bred writer and commerce aficionado, I find magic in everyday moments and weave them into captivating captions. With a controller in one hand and a pen in the other, I traverse the worlds of games and words, ever eager to share my stories. Join me on this enthralling journey!
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