Can harlequin rasboras live with silver dollars?

Verdict
Yes, with care

Yes, with care. Harlequin rasboras and silver dollars can share a tank, but watch one thing. Silver dollars grow to 6 inches and need 75 gallons, far more than a tank set up for harlequin rasboras.

Harlequin rasboraHarlequin rasbora72–80°F · pH 6–7.5 Silver dollarSilver dollar75–82°F · pH 5–7

What to watch

What works

Water side by side

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

Size to scale

Harlequin rasbora · 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

Harlequin rasboraSilver dollar
Temperature72–80 °F75–82 °F
pH6–7.55–7
Adult size2.0 in6.0 in
Minimum tank10 gal75 gal
TemperamentPeacefulPeaceful
Swims atMiddleMiddle
GroupGroups of 6+Groups of 5+
DietOmnivoreHerbivore

Better tank mates for harlequin rasboras

All harlequin rasbora tank mates

Better tank mates for silver dollars

All silver dollar tank mates

Questions

Can harlequin rasboras live with silver dollars?

Yes, with care. Harlequin rasboras and silver dollars can share a tank, but watch one thing. Silver dollars grow to 6 inches and need 75 gallons, far more than a tank set up for harlequin rasboras.

What temperature suits both harlequin rasboras and silver dollars?

75–80 °F. Harlequin rasboras need 72–80 °F, silver dollars need 75–82 °F.

What size tank do harlequin rasboras and silver dollars need together?

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