Can blood parrots live with congo tetras?

Verdict
Yes

Yes. Blood parrots and congo tetras make a good pair. Both are fine at 76–80°F. Plan on at least 55 gal.

Blood parrotBlood parrot76–80°F · pH 6.5–7.5 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: 76–80°Blood parrot 76–80°Congo tetra 73–82°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Blood parrot 6.5–7.5Congo tetra 6–7.5
The green band is the pH both tolerate.

Size to scale

Blood parrot · 8 inCongo tetra · 3 in0"1"2"3"4"5"6"7"8"
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

Blood parrotCongo tetra
Temperature76–80 °F73–82 °F
pH6.5–7.56–7.5
Adult size8.0 in3.0 in
Minimum tank55 gal30 gal
TemperamentSemi-aggressivePeaceful
Swims atMiddleMiddle
GroupAlone or in pairsGroups of 6+
DietOmnivoreOmnivore

Better tank mates for blood parrots

All blood parrot tank mates

Better tank mates for congo tetras

All congo tetra tank mates

Questions

Can blood parrots live with congo tetras?

Yes. Blood parrots and congo tetras make a good pair. Both are fine at 76–80°F. Plan on at least 55 gal.

What temperature suits both blood parrots and congo tetras?

76–80 °F. Blood parrots need 76–80 °F, congo tetras need 73–82 °F.

What size tank do blood parrots and congo tetras need together?

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