Can harlequin rasboras live with kissing gouramis?

Verdict
Yes, with care

Yes, with care. Harlequin rasboras and kissing gouramis can share a tank, but watch one thing. At 10 inches a kissing gourami can swallow a small harlequin rasbora. Fast, alert fish usually stay out of reach.

Harlequin rasboraHarlequin rasbora72–80°F · pH 6–7.5 Kissing gouramiKissing gourami72–82°F · pH 6–8

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–80°Harlequin rasbora 72–80°Kissing gourami 72–82°
The green band is the temperature range both can live in.
456789Both: 6–7.5Harlequin rasbora 6–7.5Kissing gourami 6–8
The green band is the pH both tolerate.

Size to scale

Harlequin rasbora · 2 inKissing gourami · 10 in0"2"4"6"8"10"
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 rasboraKissing gourami
Temperature72–80 °F72–82 °F
pH6–7.56–8
Adult size2.0 in10.0 in
Minimum tank10 gal55 gal
TemperamentPeacefulSemi-aggressive
Swims atMiddleMiddle
GroupGroups of 6+Alone or in pairs
DietOmnivoreOmnivore

Better tank mates for harlequin rasboras

All harlequin rasbora tank mates

Better tank mates for kissing gouramis

All kissing gourami tank mates

Questions

Can harlequin rasboras live with kissing gouramis?

Yes, with care. Harlequin rasboras and kissing gouramis can share a tank, but watch one thing. At 10 inches a kissing gourami can swallow a small harlequin rasbora. Fast, alert fish usually stay out of reach.

What temperature suits both harlequin rasboras and kissing gouramis?

72–80 °F. Harlequin rasboras need 72–80 °F, kissing gouramis need 72–82 °F.

What size tank do harlequin rasboras and kissing gouramis need together?

At least 55 gal, set by the kissing gourami. Add space for each extra fish.