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+1 Drain Water Per Click cover

Fish Guide

Fish spawn after you drain a pool. Sell weak catches, equip strong ones for passive income, and use Index to track what you have not logged yet.

By Bloxron Editorial Team · Last updated

+1 Drain Water Per Click fish guide cover: drain a pool dry, pick up fish, and stock the aquarium

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. 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 reward in-game.

Index rarity tiers and spawn odds

Open Index after drains. Tiers run from Epic to Exclusive, and higher rows show spawn odds on the UI. You do not need every entry to progress. Missing Legendary through Secret rows still tell you which pools are worth camping.

  • Epic
  • Legendary
  • Mythic
  • Exotic
  • Secret
  • Exclusive

Gold, Diamond, and event variants

TagEffect
GoldHigher sell value on the same species
DiamondLarge payout bump. Diamond variants can reach tens of millions.
VenomBuff tag on select spawns
ShinyVisual variant, usually better stats
Black HoleLimited event variant (about 10% during Black Hole events)
Bloo weatherAbout 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 timePayout
2 minutes$3.5M one-time
9 minutes$20M one-time

What aquarium income looks like

StageIncomeNotes
Early equipAbout $8.2K/minAfter Equip best on starter stock
Strong farm tankAbout $13M/minHigh-value equipped fish
Large collectAbout $42M bankedExample Collect payout after long idle
Late capacityUp to ~12 fishExpanded 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.

FishRarityValueNotes
Early pick-upsCommon$10 / $100Starter pool; take the higher payout
Scorpion crab-$12,000Early to mid sell
Shark-$35,000Mid sell sample
Neumer / NumaLegendary$35,000Mid-depth spawn
HoverthornLegendary$42,000Mid sell
BullheadLegendary$81,000Larger model pays more
Sea urchin-$200,000Mid-depth pool
Diamond Sea Urchin-Diamond tagVariant of sea urchin
Mid-pool haulMixed$100K to $400KCommon sell band in mid depth
First million fish-$1M+Later mid-game milestone
Legendary PiranhaLegendary-Index / mid targets
Sardine--Named Index sample
Anglerfish--Named Index sample
Swordfish--Named Index sample
Narwhal--Ice / deep targets
The BloopExotic$2.9M+Ice zone target
OrcaExotic$1.2M to $2MIce and exotic zones
Diamond whaleExotic$1.6MDiamond variant
MosasaurusExotic$2M to $26MSize affects payout
Diamond variant (high)Exotic+About $55MTop 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 tagGold variant sample
Diamond Sea Turtle-Diamond tagDiamond variant sample
Maro Beach--Named Index sample
Golden crabExotic-Exotic + mutation sample
LeviathanSecretTop Index targetEnd-zone fish
Bone sharkSecret-Secret Index target

FAQ

Does bigger fish pay more?

Yes. The same species with a larger model or a Gold or Diamond tag sells for more and earns more per minute in the tank.

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 rarities and shows spawn odds for Legendary through Secret and Exclusive tiers.

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. First-hour timing is on the beginner guide.