Can tiger barbs live with chili rasboras?

Verdict
Yes

Yes. Tiger barbs and chili rasboras get along in the same tank. Both are fine at 75–81°F. Plan on at least 30 gal.

Tiger barbTiger barb72–81°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: 75–81°Tiger barb 72–81°Chili rasbora 75–82°
The green band is the temperature range both can live in.
456789Both: 6–7Tiger barb 6–7.5Chili rasbora 4–7
The green band is the pH both tolerate.

Size to scale

Tiger barb · 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

Tiger barbChili rasbora
Temperature72–81 °F75–82 °F
pH6–7.54–7
Adult size3.0 in0.8 in
Minimum tank30 gal5 gal
TemperamentSemi-aggressivePeaceful
Swims atMiddleMiddle
GroupGroups of 6+Groups of 8+
DietOmnivoreCarnivore

Better tank mates for tiger barbs

All tiger barb tank mates

Better tank mates for chili rasboras

All chili rasbora tank mates

Questions

Can tiger barbs live with chili rasboras?

Yes. Tiger barbs and chili rasboras get along in the same tank. Both are fine at 75–81°F. Plan on at least 30 gal.

What temperature suits both tiger barbs and chili rasboras?

75–81 °F. Tiger barbs need 72–81 °F, chili rasboras need 75–82 °F.

What size tank do tiger barbs and chili rasboras need together?

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