Can harlequin rasboras live with glofish?

Verdict
Yes

Yes. Harlequin rasboras and glofish get along in the same tank. Both are fine at 72–80°F. Plan on at least 15 gal.

Harlequin rasboraHarlequin rasbora72–80°F · pH 6–7.5 GloFish tetraGloFish tetra72–80°F · pH 6–7.5

Why it works

Water side by side

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

Size to scale

Harlequin rasbora · 2 inGloFish tetra · 2.5 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

Harlequin rasboraGloFish tetra
Temperature72–80 °F72–80 °F
pH6–7.56–7.5
Adult size2.0 in2.5 in
Minimum tank10 gal15 gal
TemperamentPeacefulSemi-aggressive
Swims atMiddleMiddle
GroupGroups of 6+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for harlequin rasboras

All harlequin rasbora tank mates

Better tank mates for glofish

All glofish tetra tank mates

Questions

Can harlequin rasboras live with glofish?

Yes. Harlequin rasboras and glofish get along in the same tank. Both are fine at 72–80°F. Plan on at least 15 gal.

What temperature suits both harlequin rasboras and glofish?

72–80 °F. Harlequin rasboras need 72–80 °F, glofish need 72–80 °F.

What size tank do harlequin rasboras and glofish need together?

At least 15 gal, set by the glofish tetra. Add space for each extra fish.