Can tiger barbs live with blue gouramis?

Verdict
Yes

Yes. Tiger barbs and blue gouramis make a good pair. Both are fine at 72–81°F. Plan on at least 30 gal.

Tiger barbTiger barb72–81°F · pH 6–7.5 Blue gouramiBlue gourami72–82°F · pH 6–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–81°Tiger barb 72–81°Blue gourami 72–82°
The green band is the temperature range both can live in.
456789Both: 6–7.5Tiger barb 6–7.5Blue gourami 6–8
The green band is the pH both tolerate.

Size to scale

Tiger barb · 3 inBlue gourami · 5 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 barbBlue gourami
Temperature72–81 °F72–82 °F
pH6–7.56–8
Adult size3.0 in5.0 in
Minimum tank30 gal30 gal
TemperamentSemi-aggressiveSemi-aggressive
Swims atMiddleTop
GroupGroups of 6+Alone or in pairs
DietOmnivoreOmnivore

Better tank mates for tiger barbs

All tiger barb tank mates

Better tank mates for blue gouramis

All blue gourami tank mates

Questions

Can tiger barbs live with blue gouramis?

Yes. Tiger barbs and blue gouramis make a good pair. Both are fine at 72–81°F. Plan on at least 30 gal.

What temperature suits both tiger barbs and blue gouramis?

72–81 °F. Tiger barbs need 72–81 °F, blue gouramis need 72–82 °F.

What size tank do tiger barbs and blue gouramis need together?

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