Can congo tetras live with glass catfish?

Verdict
Yes

Yes. Congo tetras and glass catfish get along in the same tank. Both are fine at 75–80°F. Plan on at least 30 gal.

Congo tetraCongo tetra73–82°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: 75–80°Congo tetra 73–82°Glass catfish 75–80°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Congo tetra 6–7.5Glass catfish 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Congo tetra · 3 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

Congo tetraGlass catfish
Temperature73–82 °F75–80 °F
pH6–7.56.5–7.5
Adult size3.0 in3.0 in
Minimum tank30 gal30 gal
TemperamentPeacefulPeaceful
Swims atMiddleMiddle
GroupGroups of 6+Groups of 6+
DietOmnivoreCarnivore

Better tank mates for congo tetras

All congo tetra tank mates

Better tank mates for glass catfish

All glass catfish tank mates

Questions

Can congo tetras live with glass catfish?

Yes. Congo tetras and glass catfish get along in the same tank. Both are fine at 75–80°F. Plan on at least 30 gal.

What temperature suits both congo tetras and glass catfish?

75–80 °F. Congo tetras need 73–82 °F, glass catfish need 75–80 °F.

What size tank do congo tetras and glass catfish need together?

At least 30 gal, set by the congo tetra. Add space for each extra fish.