Can celestial pearl danios live with harlequin rasboras?

Verdict
Yes

Yes. Celestial pearl danios and harlequin rasboras get along in the same tank. Both are fine at 72–79°F. Plan on at least 10 gal.

Celestial pearl danioCelestial pearl danio72–79°F · pH 6.5–7.5 Harlequin rasboraHarlequin rasbora72–80°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–79°Celestial pearl danio 72–79°Harlequin rasbora 72–80°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Celestial pearl danio 6.5–7.5Harlequin rasbora 6–7.5
The green band is the pH both tolerate.

Size to scale

Celestial pearl danio · 1 inHarlequin rasbora · 2 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

Celestial pearl danioHarlequin rasbora
Temperature72–79 °F72–80 °F
pH6.5–7.56–7.5
Adult size1.0 in2.0 in
Minimum tank10 gal10 gal
TemperamentPeacefulPeaceful
Swims atMiddleMiddle
GroupGroups of 6+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for celestial pearl danios

All celestial pearl danio tank mates

Better tank mates for harlequin rasboras

All harlequin rasbora tank mates

Questions

Can celestial pearl danios live with harlequin rasboras?

Yes. Celestial pearl danios and harlequin rasboras get along in the same tank. Both are fine at 72–79°F. Plan on at least 10 gal.

What temperature suits both celestial pearl danios and harlequin rasboras?

72–79 °F. Celestial pearl danios need 72–79 °F, harlequin rasboras need 72–80 °F.

What size tank do celestial pearl danios and harlequin rasboras need together?

At least 10 gal, set by the celestial pearl danio. Add space for each extra fish.