Can severums live with apistogramma?

Verdict

Yes

Yes. Severums and apistogramma get along in the same tank. Both are fine at 75–84°F. Plan on at least 55 gal.

Why it works

Both are fine at 75–84°F.
pH 6–7 suits both.
They use different parts of the tank: severums the mid, apistogramma the bottom.

The green band is the temperature range both can live in.

The green band is the pH both tolerate.

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.

Can severums live with apistogramma?

Yes. Severums and apistogramma get along in the same tank. Both are fine at 75–84°F. Plan on at least 55 gal.

What temperature suits both severums and apistogramma?

75–84 °F. Severums need 74–84 °F, apistogramma need 75–84 °F.

What size tank do severums and apistogramma need together?

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