Can tiger barbs live with celestial pearl danios?

Verdict
Yes

Yes. Tiger barbs and celestial pearl danios make a good pair. Both are fine at 72–79°F. Plan on at least 30 gal.

Tiger barbTiger barb72–81°F · pH 6–7.5 Celestial pearl danioCelestial pearl danio72–79°F · pH 6.5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–79°Tiger barb 72–81°Celestial pearl danio 72–79°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Tiger barb 6–7.5Celestial pearl danio 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Tiger barb · 3 inCelestial pearl danio · 1 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 barbCelestial pearl danio
Temperature72–81 °F72–79 °F
pH6–7.56.5–7.5
Adult size3.0 in1.0 in
Minimum tank30 gal10 gal
TemperamentSemi-aggressivePeaceful
Swims atMiddleMiddle
GroupGroups of 6+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for tiger barbs

All tiger barb tank mates

Better tank mates for celestial pearl danios

All celestial pearl danio tank mates

Questions

Can tiger barbs live with celestial pearl danios?

Yes. Tiger barbs and celestial pearl danios make a good pair. Both are fine at 72–79°F. Plan on at least 30 gal.

What temperature suits both tiger barbs and celestial pearl danios?

72–79 °F. Tiger barbs need 72–81 °F, celestial pearl danios need 72–79 °F.

What size tank do tiger barbs and celestial pearl danios need together?

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