Planet Zoo 2 aquatic animals and aquarium requirements
The full aquatic roster, with the water-type and space rules you need before building a tank.
Aquatic species are the headline feature of the sequel — and the one that trips up returning players, because the habitat is measured in water, not land.
Every aquatic species
| Species | Water | Deep water | Temp | Max group |
|---|---|---|---|---|
| Blackspotted Puffer | Saltwater | 16 m² | 23–27°C | 4 |
| Blacktip Reef Shark | Saltwater | 210 m² | 22–28°C | 10 |
| Clown Triggerfish | Saltwater | 16 m² | 23–30°C | 2 |
| Dolphinfish | Saltwater | 400 m² | 24–28°C | 4 |
| Great Hammerhead | Saltwater | 960 m² | 20–28°C | 2 |
| Humphead Wrasse | Saltwater | 60 m² | 22–30°C | 10 |
| Indo Pacific Leopard Shark | Saltwater | 36 m² | 24–29°C | 20 |
| Ocean Sunfish | Saltwater | 300 m² | 10–25°C | 3 |
| Ocellated Eagle Ray | Saltwater | 180 m² | 24–27°C | 16 |
| Red Lionfish | Saltwater | 16 m² | 22–28°C | 20 |
| Sailfin Snapper | Saltwater | 40 m² | 22–29°C | 10 |
| Sand Tiger Shark | Saltwater | 420 m² | 16–28°C | 6 |
12 of these are saltwater and 0 freshwater. Set the water type before adding animals — converting a tank afterwards means rebuilding the water volume and re-checking every animal.
Building a tank that holds welfare
- Pick the water type first, then the species that fit it.
- Build to the largest deep-water figure among the species you want to co-house.
- Keep the temperature inside every species' band — a shared tank must satisfy all of them.
- Add enrichment before adding a second species: one unhappy animal is easier to debug than four.
Welfare still dropping? Check salinity and temperature before space. A freshwater species
in saltwater will never settle, no matter how big the tank.
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