Can bolivian rams live with silver dollars?

Verdict
Yes

Yes. Bolivian rams and silver dollars get along in the same tank. Both are fine at 75–79°F. Plan on at least 75 gal.

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–79°Bolivian ram 72–79°Silver dollar 75–82°
The green band is the temperature range both can live in.
456789Both: 6–7Bolivian ram 6–7.5Silver dollar 5–7
The green band is the pH both tolerate.

Size to scale

Bolivian ram · 3 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

Bolivian ramSilver dollar
Temperature72–79 °F75–82 °F
pH6–7.55–7
Adult size3.0 in6.0 in
Minimum tank20 gal75 gal
TemperamentPeacefulPeaceful
Swims atBottomMiddle
GroupAlone or in pairsGroups of 5+
DietOmnivoreHerbivore

Better tank mates for bolivian rams

All bolivian ram tank mates

Better tank mates for silver dollars

All silver dollar tank mates

Questions

Can bolivian rams live with silver dollars?

Yes. Bolivian rams and silver dollars get along in the same tank. Both are fine at 75–79°F. Plan on at least 75 gal.

What temperature suits both bolivian rams and silver dollars?

75–79 °F. Bolivian rams need 72–79 °F, silver dollars need 75–82 °F.

What size tank do bolivian rams and silver dollars need together?

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