Can ember tetras live with gold barbs?

Verdict
Yes

Yes. Ember tetras and gold barbs make a good pair. Both are fine at 73–75°F. Plan on at least 20 gal.

Ember tetraEmber tetra73–84°F · pH 5.5–7 Gold barbGold barb64–75°F · pH 6–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 73–75°Ember tetra 73–84°Gold barb 64–75°
The green band is the temperature range both can live in.
456789Both: 6–7Ember tetra 5.5–7Gold barb 6–8
The green band is the pH both tolerate.

Size to scale

Ember tetra · 0.8 inGold barb · 3 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

Ember tetraGold barb
Temperature73–84 °F64–75 °F
pH5.5–76–8
Adult size0.8 in3.0 in
Minimum tank5 gal20 gal
TemperamentPeacefulPeaceful
Swims atMiddleMiddle
GroupGroups of 6+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for ember tetras

All ember tetra tank mates

Better tank mates for gold barbs

All gold barb tank mates

Questions

Can ember tetras live with gold barbs?

Yes. Ember tetras and gold barbs make a good pair. Both are fine at 73–75°F. Plan on at least 20 gal.

What temperature suits both ember tetras and gold barbs?

73–75 °F. Ember tetras need 73–84 °F, gold barbs need 64–75 °F.

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

At least 20 gal, set by the gold barb. Add space for each extra fish.