Can pea puffers live with silver dollars?

Verdict

Yes, with care

Yes, with care. Pea puffers and silver dollars can share a tank, but watch one thing. Water chemistry is a squeeze. The only pH that suits both is around 7.

Pea puffer74–82°F · pH 7–8

Silver dollar75–82°F · pH 5–7

What to watch

Watch outWater chemistry is a squeeze. The only pH that suits both is around 7.
Watch outPea puffers are aggressive, though silver dollars are big enough to shrug most of it off.
Watch outSilver dollars grow to 6 inches and need 75 gallons, far more than a tank set up for pea puffers.

What works

Both are fine at 75–82°F.

Water side by side

The green band is the temperature range both can live in.

The green band is the pH both tolerate.

Size to scale

Adult length in an aquarium. A fish can swallow anything that fits in its mouth, roughly a third to half its own length for predators.

Care at a glance

	Pea puffer	Silver dollar
Temperature	74–82 °F	75–82 °F
pH	7–8	5–7
Adult size	1.0 in	6.0 in
Minimum tank	5 gal	75 gal
Temperament	Aggressive	Peaceful
Swims at	All levels	Middle
Group	Alone or in pairs	Groups of 5+
Diet	Carnivore	Herbivore

Better tank mates for pea puffers

CrayfishYes

All pea puffer tank mates

Better tank mates for silver dollars

All silver dollar tank mates

Questions

Can pea puffers live with silver dollars?

Yes, with care. Pea puffers and silver dollars can share a tank, but watch one thing. Water chemistry is a squeeze. The only pH that suits both is around 7.

What temperature suits both pea puffers and silver dollars?

75–82 °F. Pea puffers need 74–82 °F, silver dollars need 75–82 °F.

What size tank do pea puffers and silver dollars need together?

At least 75 gal, set by the silver dollar. Add space for each extra fish.