Can glass catfish live with dwarf neon rainbowfish?

Verdict
Yes

Yes. Glass catfish and dwarf neon 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 Dwarf neon rainbowfishDwarf neon rainbowfish75–82°F · pH 6.5–7.5

Why it works

Water side by side

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

Size to scale

Glass catfish · 3 inDwarf neon rainbowfish · 2.5 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 catfishDwarf neon rainbowfish
Temperature75–80 °F75–82 °F
pH6.5–7.56.5–7.5
Adult size3.0 in2.5 in
Minimum tank30 gal20 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 dwarf neon rainbowfish

All dwarf neon rainbowfish tank mates

Questions

Can glass catfish live with dwarf neon rainbowfish?

Yes. Glass catfish and dwarf neon 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 dwarf neon rainbowfish?

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

What size tank do glass catfish and dwarf neon rainbowfish need together?

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