Can cherry barbs live with silver dollars?

Verdict
Yes

Yes, cherry barbs and silver dollars can live together. Both are fine at 75–81°F. Plan on at least 75 gal.

Cherry barbCherry barb73–81°F · pH 6–7.5 Silver dollarSilver dollar75–82°F · pH 5–7

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–81°Cherry barb 73–81°Silver dollar 75–82°
The green band is the temperature range both can live in.
456789Both: 6–7Cherry barb 6–7.5Silver dollar 5–7
The green band is the pH both tolerate.

Size to scale

Cherry barb · 2 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

Cherry barbSilver dollar
Temperature73–81 °F75–82 °F
pH6–7.55–7
Adult size2.0 in6.0 in
Minimum tank20 gal75 gal
TemperamentPeacefulPeaceful
Swims atMiddleMiddle
GroupGroups of 6+Groups of 5+
DietOmnivoreHerbivore

Better tank mates for cherry barbs

All cherry barb tank mates

Better tank mates for silver dollars

All silver dollar tank mates

Questions

Can cherry barbs live with silver dollars?

Yes, cherry barbs and silver dollars can live together. Both are fine at 75–81°F. Plan on at least 75 gal.

What temperature suits both cherry barbs and silver dollars?

75–81 °F. Cherry barbs need 73–81 °F, silver dollars need 75–82 °F.

What size tank do cherry barbs and silver dollars need together?

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