Can boesemani rainbowfish live with kissing gouramis?

Verdict
Yes

Yes. Boesemani rainbowfish and kissing gouramis make a good pair. Both are fine at 75–82°F. Plan on at least 55 gal.

Boesemani rainbowfishBoesemani rainbowfish75–82°F · pH 7–8 Kissing gouramiKissing gourami72–82°F · pH 6–8

Why it works

Water side by side

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

Size to scale

Boesemani rainbowfish · 4 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

Boesemani rainbowfishKissing gourami
Temperature75–82 °F72–82 °F
pH7–86–8
Adult size4.0 in10.0 in
Minimum tank30 gal55 gal
TemperamentPeacefulSemi-aggressive
Swims atMiddleMiddle
GroupGroups of 6+Alone or in pairs
DietOmnivoreOmnivore

Better tank mates for boesemani rainbowfish

All boesemani rainbowfish tank mates

Better tank mates for kissing gouramis

All kissing gourami tank mates

Questions

Can boesemani rainbowfish live with kissing gouramis?

Yes. Boesemani rainbowfish and kissing gouramis make a good pair. Both are fine at 75–82°F. Plan on at least 55 gal.

What temperature suits both boesemani rainbowfish and kissing gouramis?

75–82 °F. Boesemani rainbowfish need 75–82 °F, kissing gouramis need 72–82 °F.

What size tank do boesemani rainbowfish and kissing gouramis need together?

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