Can tiger barbs live with glowlight tetras?

Verdict
Yes

Yes. Tiger barbs and glowlight tetras get along in the same tank. Both are fine at 74–80°F. Plan on at least 30 gal.

Tiger barbTiger barb72–81°F · pH 6–7.5 Glowlight tetraGlowlight tetra74–80°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 74–80°Tiger barb 72–81°Glowlight tetra 74–80°
The green band is the temperature range both can live in.
456789Both: 6–7.5Tiger barb 6–7.5Glowlight tetra 6–7.5
The green band is the pH both tolerate.

Size to scale

Tiger barb · 3 inGlowlight tetra · 1.5 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 barbGlowlight tetra
Temperature72–81 °F74–80 °F
pH6–7.56–7.5
Adult size3.0 in1.5 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 glowlight tetras

All glowlight tetra tank mates

Questions

Can tiger barbs live with glowlight tetras?

Yes. Tiger barbs and glowlight tetras get along in the same tank. Both are fine at 74–80°F. Plan on at least 30 gal.

What temperature suits both tiger barbs and glowlight tetras?

74–80 °F. Tiger barbs need 72–81 °F, glowlight tetras need 74–80 °F.

What size tank do tiger barbs and glowlight tetras need together?

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