Can glass catfish live with upside down catfish?

Verdict
Yes

Yes, glass catfish and upside down catfish can live together. Both are fine at 75–79°F. Plan on at least 30 gal.

Glass catfishGlass catfish75–80°F · pH 6.5–7.5 Upside down catfishUpside down catfish72–79°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–79°Glass catfish 75–80°Upside down catfish 72–79°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Glass catfish 6.5–7.5Upside down catfish 6–7.5
The green band is the pH both tolerate.

Size to scale

Glass catfish · 3 inUpside down catfish · 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 catfishUpside down catfish
Temperature75–80 °F72–79 °F
pH6.5–7.56–7.5
Adult size3.0 in4.0 in
Minimum tank30 gal30 gal
TemperamentPeacefulPeaceful
Swims atMiddleBottom
GroupGroups of 6+Groups of 3+
DietCarnivoreOmnivore

Better tank mates for glass catfish

All glass catfish tank mates

Better tank mates for upside down catfish

All upside down catfish tank mates

Questions

Can glass catfish live with upside down catfish?

Yes, glass catfish and upside down catfish can live together. Both are fine at 75–79°F. Plan on at least 30 gal.

What temperature suits both glass catfish and upside down catfish?

75–79 °F. Glass catfish need 75–80 °F, upside down catfish need 72–79 °F.

What size tank do glass catfish and upside down catfish need together?

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