Can glass catfish live with kissing gouramis?

Verdict
Yes

Yes. Glass catfish and kissing gouramis make a good pair. Both are fine at 75–80°F. Plan on at least 55 gal.

Glass catfishGlass catfish75–80°F · pH 6.5–7.5 Kissing gouramiKissing gourami72–82°F · pH 6–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–80°Glass catfish 75–80°Kissing gourami 72–82°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Glass catfish 6.5–7.5Kissing gourami 6–8
The green band is the pH both tolerate.

Size to scale

Glass catfish · 3 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

Glass catfishKissing gourami
Temperature75–80 °F72–82 °F
pH6.5–7.56–8
Adult size3.0 in10.0 in
Minimum tank30 gal55 gal
TemperamentPeacefulSemi-aggressive
Swims atMiddleMiddle
GroupGroups of 6+Alone or in pairs
DietCarnivoreOmnivore

Better tank mates for glass catfish

All glass catfish tank mates

Better tank mates for kissing gouramis

All kissing gourami tank mates

Questions

Can glass catfish live with kissing gouramis?

Yes. Glass catfish and kissing gouramis make a good pair. Both are fine at 75–80°F. Plan on at least 55 gal.

What temperature suits both glass catfish and kissing gouramis?

75–80 °F. Glass catfish need 75–80 °F, kissing gouramis need 72–82 °F.

What size tank do glass catfish and kissing gouramis need together?

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