Can silver dollars live with clown plecos?

Verdict
Yes

Yes, silver dollars and clown plecos can live together. Both are fine at 75–82°F. Plan on at least 75 gal.

Silver dollarSilver dollar75–82°F · pH 5–7 Clown plecoClown pleco73–82°F · pH 6.5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–82°Silver dollar 75–82°Clown pleco 73–82°
The green band is the temperature range both can live in.
456789Both: 6.5–7Silver dollar 5–7Clown pleco 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Silver dollar · 6 inClown pleco · 3.5 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

Silver dollarClown pleco
Temperature75–82 °F73–82 °F
pH5–76.5–7.5
Adult size6.0 in3.5 in
Minimum tank75 gal20 gal
TemperamentPeacefulPeaceful
Swims atMiddleBottom
GroupGroups of 5+Alone or in pairs
DietHerbivoreHerbivore

Better tank mates for silver dollars

All silver dollar tank mates

Better tank mates for clown plecos

All clown pleco tank mates

Questions

Can silver dollars live with clown plecos?

Yes, silver dollars and clown plecos can live together. Both are fine at 75–82°F. Plan on at least 75 gal.

What temperature suits both silver dollars and clown plecos?

75–82 °F. Silver dollars need 75–82 °F, clown plecos need 73–82 °F.

What size tank do silver dollars and clown plecos need together?

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