Can discus live with glass catfish?

Verdict
No

No. Discus and glass catfish should not share a tank. No shared temperature. Discus need 82–88°F, glass catfish need 75–80°F.

DiscusDiscus82–88°F · pH 5.5–7 Glass catfishGlass catfish75–80°F · pH 6.5–7.5

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Discus 82–88°Glass catfish 75–80°
The ranges do not meet, so one of them would always be too warm or too cold.
456789Both: 6.5–7Discus 5.5–7Glass catfish 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Discus · 6 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

DiscusGlass catfish
Temperature82–88 °F75–80 °F
pH5.5–76.5–7.5
Adult size6.0 in3.0 in
Minimum tank55 gal30 gal
TemperamentPeacefulPeaceful
Swims atMiddleMiddle
GroupGroups of 5+Groups of 6+
DietCarnivoreCarnivore

Better tank mates for discus

All discus tank mates

Better tank mates for glass catfish

All glass catfish tank mates

Questions

Can discus live with glass catfish?

No. Discus and glass catfish should not share a tank. No shared temperature. Discus need 82–88°F, glass catfish need 75–80°F.

What temperature suits both discus and glass catfish?

None. Discus need 82–88 °F and glass catfish need 75–80 °F, so the ranges do not meet.

What size tank do discus and glass catfish need together?

At least 55 gal, set by the discus. Add space for each extra fish.