Can platies live with silver dollars?

Verdict
Yes, with care

Yes, with care. Platies 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 to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–80°Platy 70–80°Silver dollar 75–82°
The green band is the temperature range both can live in.
456789Both: 7Platy 7–8.2Silver dollar 5–7
The green band is the pH both tolerate.

Size to scale

Platy · 2.5 inSilver dollar · 6 in0"1"2"3"4"5"6"
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

PlatySilver dollar
Temperature70–80 °F75–82 °F
pH7–8.25–7
Adult size2.5 in6.0 in
Minimum tank10 gal75 gal
TemperamentPeacefulPeaceful
Swims atMiddleMiddle
GroupGroups of 3+Groups of 5+
DietOmnivoreHerbivore

Better tank mates for platies

All platy tank mates

Better tank mates for silver dollars

All silver dollar tank mates

Questions

Can platies live with silver dollars?

Yes, with care. Platies 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 platies and silver dollars?

75–80 °F. Platies need 70–80 °F, silver dollars need 75–82 °F.

What size tank do platies and silver dollars need together?

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