Can discus live with apistogramma?

Verdict
Yes

Yes. Discus and apistogramma get along in the same tank. Both are fine at 82–84°F. Plan on at least 55 gal.

DiscusDiscus82–88°F · pH 5.5–7 ApistogrammaApistogramma75–84°F · pH 5–7

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 82–84°Discus 82–88°Apistogramma 75–84°
The green band is the temperature range both can live in.
456789Both: 5.5–7Discus 5.5–7Apistogramma 5–7
The green band is the pH both tolerate.

Size to scale

Discus · 6 inApistogramma · 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

DiscusApistogramma
Temperature82–88 °F75–84 °F
pH5.5–75–7
Adult size6.0 in3.0 in
Minimum tank55 gal20 gal
TemperamentPeacefulSemi-aggressive
Swims atMiddleBottom
GroupGroups of 5+Alone or in pairs
DietCarnivoreCarnivore

Better tank mates for discus

All discus tank mates

Better tank mates for apistogramma

All apistogramma tank mates

Questions

Can discus live with apistogramma?

Yes. Discus and apistogramma get along in the same tank. Both are fine at 82–84°F. Plan on at least 55 gal.

What temperature suits both discus and apistogramma?

82–84 °F. Discus need 82–88 °F, apistogramma need 75–84 °F.

What size tank do discus and apistogramma need together?

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