Fish Guide
Fish spawn after you drain a pool. Sell weak catches, equip strong ones for passive income, and chase Hole or Venom mutations when weather windows open.
By Bloxron Editorial Team · Last updated
Fish spawn after you empty a pool. Walk up to collect them, sell weak ones at the Fisherman, and put strong ones in your aquarium for passive income. Sell prices scale with weight in kilograms, the same species can pay very different amounts. Index logs species and shows spawn odds on higher tiers.
Deeper pools with higher luck are listed on progression. Display stand slots are under upgrades. First-hour sell timing is on the beginner guide.
Put fish, Equip best, and Sell all
- Put fish. Adds a caught fish to your home aquarium. Equipped fish generate passive cash over time.
- Equip best. Fills aquarium slots with your highest $/min fish. Use it after a good farming run.
- Sell all. Clears weak inventory fish at the Fisherman when you need pump cash now.
- Best fish holder. The server tracks the best fish held. That player can claim an extra cash reward, about $51M after holding the top slot for roughly 21 minutes.
Index rarity tiers and spawn odds
Open Index after drains. Tiers run from Common to Exclusive, and Legendary and above often show spawn odds on the UI. You do not need every entry to progress. Missing rows still tell you which pools are worth camping.
- Common
- Rare
- Epic
- Legendary
- Mythic
- Exotic
- Secret
- Exclusive
Fish mutations
Mutations raise sell value and aquarium income on the same species. Gold and Diamond spawn naturally across pools. Venom and Hole are rare outside weather windows. Pick up mutated fish fast; they can despawn like normal catches.
| Mutation | Multiplier | How to get | Notes |
|---|---|---|---|
| Hole | 20× | Black Hole weather | Dark tag; strongest income jump |
| Venom | 10× | Poison weather | Neon-green tag; strong mid-game target |
| Diamond | 5× | Natural spawns | Cyan tag; can reach tens of millions on sells |
| Gold | 2× | Natural spawns | Gold tag; steady background income |
| Weather | Target | Window |
|---|---|---|
| Black Hole weather | Hole fish | About +10% mutation chance for ~4 minutes |
| Poison weather | Venom fish | About +10% mutation chance for ~4 minutes |
During a weather window, move between pools instead of camping one spot. Sell plain fish for pump cash. Stock Hole and Venom catches in the aquarium. Weather only affects new spawns, not fish already in your tank.
Event and visual variants
| Tag | Effect |
|---|---|
| Shiny | Visual variant, usually better stats |
| Black Hole | Limited event fish tag (about 10% during Black Hole windows) |
| Bloo weather | About 10% weather buff while Bloo is active. Can change pool rolls. |
Center display spot bonuses
Some aquarium layouts pay a one-time bonus when a fish holds the center display spot long enough. Collect when the timer clears.
| Hold time | Payout |
|---|---|
| 2 minutes | $3.5M one-time |
| 9 minutes | $20M one-time |
What aquarium income looks like
| Stage | Income | Notes |
|---|---|---|
| Early equip | About $8.2K/min | After Equip best on starter stock |
| Strong farm tank | About $13M/min | High-value equipped fish |
| Large collect | About $42M banked | Example Collect payout after long idle or offline rewards |
| Late capacity | Up to ~12 fish | Expanded aquarium / display slots late game |
Sample fish sells and Index names
Sample sells and Index names from mid and late pools. Blank value cells mean the name is confirmed but no sell figure was logged.
| Fish | Rarity | Value | Notes |
|---|---|---|---|
| Early pick-ups | Common | $10 / $100 | Starter pool; take the higher payout |
| Goldfish | Common | $15 to $52 | Weight affects payout |
| Clownfish | Common | - | Starter Index entry |
| Scorpion crab | - | $12,000 | Early to mid sell |
| Shark | - | $35,000 | Mid sell sample; WaterHappy code reward |
| Patrick | - | ~$35,000 | Mid sell sample |
| Neumer / Numa | Legendary | $35,000 | Mid-depth spawn |
| Hoverthorn | Legendary | $42,000 | Mid sell |
| Bullhead | Legendary | $81,000 | Larger model pays more |
| Starfish | Epic | - | Index sample |
| Lionfish | Legendary | - | Index sample |
| Sea urchin | - | $200,000 | Mid-depth pool |
| Diamond Sea Urchin | - | Diamond tag | Variant of sea urchin |
| Mid-pool haul | Mixed | $100K to $400K | Common sell band in mid depth |
| Ocean sunfish | - | ~$40K/min | Strong aquarium stock |
| First million fish | - | $1M+ | Later mid-game milestone |
| Legendary Piranha | Legendary | - | Index / mid targets |
| Sardine | Rare | - | Named Index sample |
| Anglerfish | Mythic | - | Named Index sample |
| Swordfish | - | - | Named Index sample |
| Whale | - | - | Deep pool Index sample |
| Narwhal | - | - | Ice / deep targets |
| The Bloop | Exotic | $2.9M+ | Ice zone target |
| Orca | Exotic | $1.2M to $2M | Ice and exotic zones |
| Gold orca | Exotic | - | Exotic variant sample |
| Diamond whale | Exotic | $1.6M | Diamond variant |
| Golden turtle | Exotic | - | Exotic zone target |
| Mosasaurus | Exotic | $2M to $26M | Size affects payout; MythicFish code reward |
| Venom Rosy Ray | Event | TBA | Cthulhu code reward; sell value and Index tier confirm in-client |
| Diamond variant (high) | Exotic+ | About $55M | Top diamond sell sample |
| Coral Crab | - | - | Named Index sample |
| Tongue Thief | - | - | Named Index sample |
| Nibbler Mango | - | - | Named Index sample |
| Jetter Charis | - | - | Named Index sample |
| Gold Jellyfish | - | Gold tag | Gold variant sample |
| Diamond Sea Turtle | - | Diamond tag | Diamond variant sample |
| Maro Beach | - | - | Named Index sample |
| Golden crab | Exotic | - | Exotic + mutation sample |
| Leviathan | Secret | Top Index target | End-zone fish |
| Bone shark | Secret | - | Secret Index target |
FAQ
Does bigger fish pay more?
Yes. Each fish has a weight in kilograms. A larger model, Gold or Diamond tag, or heavier roll sells for more and earns more per minute in the tank. Goldfish can sell anywhere from about $15 to $52 depending on weight.
Do fish have fixed sell prices?
No. The same species can pay very different amounts based on weight and variant tags. Read the sell preview before you dump a haul at the Fisherman.
What does Equip best do?
It fills your aquarium with your highest $/min fish automatically. Use it after a good farming run.
Do I need every Index entry?
Not for basic progression. Index helps you track missing species from Common through Exclusive. Legendary and above often show spawn odds on the UI.
What is the center spot bonus?
Keeping a fish in the aquarium center display long enough pays a one-time cash bonus. Examples include about $3.5M at two minutes and $20M at nine minutes.
Should I sell fish or stock the tank?
Sell when you need pump cash. Stock when a fish earns more per minute than a quick sell-and-rebuy cycle. Offline rewards also pay equipped fish while you are away.
What is the best mutation?
Hole at 20× is the top payout. Venom at 10× is the next target during Poison weather. Gold and Diamond are worth grabbing anytime they spawn.
Does weather change fish already in my aquarium?
No. Weather only improves the chance of new mutated spawns. Fish already in your bag or tank keep their current tags.
Should I sell mutated fish?
Sell plain fish when you need pump cash. Keep Hole, Venom, and strong Diamond catches for aquarium income unless you need an instant sell to clear a gate.
What does the MythicFish code give?
An Exotic Mosasaurus fish for your aquarium or inventory. It can also roll a random pet on some accounts. Redeem through the ticket icon on the codes page.
What fish does the Cthulhu code give?
Venom Rosy Ray plus a Draw Ticket. Sell value and Index tier still confirm in-client. CDraw pays Cthulhu Tickets for the same event currency track.