Can silver dollars live with zebra plecos?

Verdict
Yes

Yes. Silver dollars and zebra plecos get along in the same tank. Both are fine at 79–82°F. Plan on at least 75 gal.

Silver dollarSilver dollar75–82°F · pH 5–7 Zebra plecoZebra pleco79–88°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 79–82°Silver dollar 75–82°Zebra pleco 79–88°
The green band is the temperature range both can live in.
456789Both: 6–7Silver dollar 5–7Zebra pleco 6–7.5
The green band is the pH both tolerate.

Size to scale

Silver dollar · 6 inZebra 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 dollarZebra pleco
Temperature75–82 °F79–88 °F
pH5–76–7.5
Adult size6.0 in3.5 in
Minimum tank75 gal30 gal
TemperamentPeacefulPeaceful
Swims atMiddleBottom
GroupGroups of 5+Alone or in pairs
DietHerbivoreCarnivore

Better tank mates for silver dollars

All silver dollar tank mates

Better tank mates for zebra plecos

All zebra pleco tank mates

Questions

Can silver dollars live with zebra plecos?

Yes. Silver dollars and zebra plecos get along in the same tank. Both are fine at 79–82°F. Plan on at least 75 gal.

What temperature suits both silver dollars and zebra plecos?

79–82 °F. Silver dollars need 75–82 °F, zebra plecos need 79–88 °F.

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

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