Can silver dollars live with blue gouramis?

Verdict
Yes

Yes. Silver dollars and blue gouramis make a good pair. Both are fine at 75–82°F. Plan on at least 75 gal.

Silver dollarSilver dollar75–82°F · pH 5–7 Blue gouramiBlue gourami72–82°F · pH 6–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–82°Silver dollar 75–82°Blue gourami 72–82°
The green band is the temperature range both can live in.
456789Both: 6–7Silver dollar 5–7Blue gourami 6–8
The green band is the pH both tolerate.

Size to scale

Silver dollar · 6 inBlue gourami · 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 dollarBlue gourami
Temperature75–82 °F72–82 °F
pH5–76–8
Adult size6.0 in5.0 in
Minimum tank75 gal30 gal
TemperamentPeacefulSemi-aggressive
Swims atMiddleTop
GroupGroups of 5+Alone or in pairs
DietHerbivoreOmnivore

Better tank mates for silver dollars

All silver dollar tank mates

Better tank mates for blue gouramis

All blue gourami tank mates

Questions

Can silver dollars live with blue gouramis?

Yes. Silver dollars and blue gouramis make a good pair. Both are fine at 75–82°F. Plan on at least 75 gal.

What temperature suits both silver dollars and blue gouramis?

75–82 °F. Silver dollars need 75–82 °F, blue gouramis need 72–82 °F.

What size tank do silver dollars and blue gouramis need together?

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