Can pearl gouramis live with glass catfish?

Verdict
Yes

Yes. Pearl gouramis and glass catfish make a good pair. Both are fine at 77–80°F. Plan on at least 30 gal.

Pearl gouramiPearl gourami77–82°F · pH 6–7.5 Glass catfishGlass catfish75–80°F · pH 6.5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 77–80°Pearl gourami 77–82°Glass catfish 75–80°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Pearl gourami 6–7.5Glass catfish 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Pearl gourami · 5 inGlass catfish · 3 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

Pearl gouramiGlass catfish
Temperature77–82 °F75–80 °F
pH6–7.56.5–7.5
Adult size5.0 in3.0 in
Minimum tank30 gal30 gal
TemperamentPeacefulPeaceful
Swims atTopMiddle
GroupAlone or in pairsGroups of 6+
DietOmnivoreCarnivore

Better tank mates for pearl gouramis

All pearl gourami tank mates

Better tank mates for glass catfish

All glass catfish tank mates

Questions

Can pearl gouramis live with glass catfish?

Yes. Pearl gouramis and glass catfish make a good pair. Both are fine at 77–80°F. Plan on at least 30 gal.

What temperature suits both pearl gouramis and glass catfish?

77–80 °F. Pearl gouramis need 77–82 °F, glass catfish need 75–80 °F.

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

At least 30 gal, set by the pearl gourami. Add space for each extra fish.