Can angelfish live with congo tetras?

Verdict
Yes

Yes. Angelfish and congo tetras make a good pair. Both are fine at 76–82°F. Plan on at least 30 gal.

AngelfishAngelfish76–84°F · pH 6–7.5 Congo tetraCongo tetra73–82°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 76–82°Angelfish 76–84°Congo tetra 73–82°
The green band is the temperature range both can live in.
456789Both: 6–7.5Angelfish 6–7.5Congo tetra 6–7.5
The green band is the pH both tolerate.

Size to scale

Angelfish · 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

AngelfishCongo tetra
Temperature76–84 °F73–82 °F
pH6–7.56–7.5
Adult size6.0 in3.0 in
Minimum tank30 gal30 gal
TemperamentSemi-aggressivePeaceful
Swims atMiddleMiddle
GroupAlone or in pairsGroups of 6+
DietOmnivoreOmnivore

Better tank mates for angelfish

All angelfish tank mates

Better tank mates for congo tetras

All congo tetra tank mates

Questions

Can angelfish live with congo tetras?

Yes. Angelfish and congo tetras make a good pair. Both are fine at 76–82°F. Plan on at least 30 gal.

What temperature suits both angelfish and congo tetras?

76–82 °F. Angelfish need 76–84 °F, congo tetras need 73–82 °F.

What size tank do angelfish and congo tetras need together?

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