Can glass catfish live with boesemani rainbowfish?

Verdict
Yes

Yes. Glass catfish and boesemani rainbowfish make a good pair. Both are fine at 75–80°F. Plan on at least 30 gal.

Glass catfishGlass catfish75–80°F · pH 6.5–7.5 Boesemani rainbowfishBoesemani rainbowfish75–82°F · pH 7–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–80°Glass catfish 75–80°Boesemani rainbowfish 75–82°
The green band is the temperature range both can live in.
456789Both: 7–7.5Glass catfish 6.5–7.5Boesemani rainbowfish 7–8
The green band is the pH both tolerate.

Size to scale

Glass catfish · 3 inBoesemani rainbowfish · 4 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

Glass catfishBoesemani rainbowfish
Temperature75–80 °F75–82 °F
pH6.5–7.57–8
Adult size3.0 in4.0 in
Minimum tank30 gal30 gal
TemperamentPeacefulPeaceful
Swims atMiddleMiddle
GroupGroups of 6+Groups of 6+
DietCarnivoreOmnivore

Better tank mates for glass catfish

All glass catfish tank mates

Better tank mates for boesemani rainbowfish

All boesemani rainbowfish tank mates

Questions

Can glass catfish live with boesemani rainbowfish?

Yes. Glass catfish and boesemani rainbowfish make a good pair. Both are fine at 75–80°F. Plan on at least 30 gal.

What temperature suits both glass catfish and boesemani rainbowfish?

75–80 °F. Glass catfish need 75–80 °F, boesemani rainbowfish need 75–82 °F.

What size tank do glass catfish and boesemani rainbowfish need together?

At least 30 gal, set by the glass catfish. Add space for each extra fish.