Can discus live with congo tetras?

Verdict
Yes, with care

Yes, with care. Discus and congo tetras can share a tank, but watch one thing. They only share 82°F. Keep the heater set there and steady.

DiscusDiscus82–88°F · pH 5.5–7 Congo tetraCongo tetra73–82°F · pH 6–7.5

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 82°Discus 82–88°Congo tetra 73–82°
The green band is the temperature range both can live in.
456789Both: 6–7Discus 5.5–7Congo tetra 6–7.5
The green band is the pH both tolerate.

Size to scale

Discus · 6 inCongo tetra · 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

DiscusCongo tetra
Temperature82–88 °F73–82 °F
pH5.5–76–7.5
Adult size6.0 in3.0 in
Minimum tank55 gal30 gal
TemperamentPeacefulPeaceful
Swims atMiddleMiddle
GroupGroups of 5+Groups of 6+
DietCarnivoreOmnivore

Better tank mates for discus

All discus tank mates

Better tank mates for congo tetras

All congo tetra tank mates

Questions

Can discus live with congo tetras?

Yes, with care. Discus and congo tetras can share a tank, but watch one thing. They only share 82°F. Keep the heater set there and steady.

What temperature suits both discus and congo tetras?

82–82 °F. Discus need 82–88 °F, congo tetras need 73–82 °F.

What size tank do discus and congo tetras need together?

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