Can congo tetras live with chili rasboras?

Verdict
Yes

Yes. Congo tetras and chili rasboras get along in the same tank. Both are fine at 75–82°F. Plan on at least 30 gal.

Congo tetraCongo tetra73–82°F · pH 6–7.5 Chili rasboraChili rasbora75–82°F · pH 4–7

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–82°Congo tetra 73–82°Chili rasbora 75–82°
The green band is the temperature range both can live in.
456789Both: 6–7Congo tetra 6–7.5Chili rasbora 4–7
The green band is the pH both tolerate.

Size to scale

Congo tetra · 3 inChili rasbora · 0.8 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

Congo tetraChili rasbora
Temperature73–82 °F75–82 °F
pH6–7.54–7
Adult size3.0 in0.8 in
Minimum tank30 gal5 gal
TemperamentPeacefulPeaceful
Swims atMiddleMiddle
GroupGroups of 6+Groups of 8+
DietOmnivoreCarnivore

Better tank mates for congo tetras

All congo tetra tank mates

Better tank mates for chili rasboras

All chili rasbora tank mates

Questions

Can congo tetras live with chili rasboras?

Yes. Congo tetras and chili rasboras get along in the same tank. Both are fine at 75–82°F. Plan on at least 30 gal.

What temperature suits both congo tetras and chili rasboras?

75–82 °F. Congo tetras need 73–82 °F, chili rasboras need 75–82 °F.

What size tank do congo tetras and chili rasboras need together?

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