Can tiger barbs live with ember tetras?

Verdict
Yes

Yes. Tiger barbs and ember tetras make a good pair. Both are fine at 73–81°F. Plan on at least 30 gal.

Tiger barbTiger barb72–81°F · pH 6–7.5 Ember tetraEmber tetra73–84°F · pH 5.5–7

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 73–81°Tiger barb 72–81°Ember tetra 73–84°
The green band is the temperature range both can live in.
456789Both: 6–7Tiger barb 6–7.5Ember tetra 5.5–7
The green band is the pH both tolerate.

Size to scale

Tiger barb · 3 inEmber tetra · 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 barbEmber tetra
Temperature72–81 °F73–84 °F
pH6–7.55.5–7
Adult size3.0 in0.8 in
Minimum tank30 gal5 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 ember tetras

All ember tetra tank mates

Questions

Can tiger barbs live with ember tetras?

Yes. Tiger barbs and ember tetras make a good pair. Both are fine at 73–81°F. Plan on at least 30 gal.

What temperature suits both tiger barbs and ember tetras?

73–81 °F. Tiger barbs need 72–81 °F, ember tetras need 73–84 °F.

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

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