Can bettas live with ember tetras?

Verdict
Yes

Yes. Bettas and ember tetras make a good pair. Both are fine at 76–82°F. Plan on at least 5 gal.

BettaBetta76–82°F · pH 6.5–7.5 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: 76–82°Betta 76–82°Ember tetra 73–84°
The green band is the temperature range both can live in.
456789Both: 6.5–7Betta 6.5–7.5Ember tetra 5.5–7
The green band is the pH both tolerate.

Size to scale

Betta · 2.5 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

BettaEmber tetra
Temperature76–82 °F73–84 °F
pH6.5–7.55.5–7
Adult size2.5 in0.8 in
Minimum tank5 gal5 gal
TemperamentSemi-aggressivePeaceful
Swims atTopMiddle
GroupOne per tankGroups of 6+
DietCarnivoreOmnivore

Better tank mates for bettas

All betta tank mates

Better tank mates for ember tetras

All ember tetra tank mates

Questions

Can bettas live with ember tetras?

Yes. Bettas and ember tetras make a good pair. Both are fine at 76–82°F. Plan on at least 5 gal.

What temperature suits both bettas and ember tetras?

76–82 °F. Bettas need 76–82 °F, ember tetras need 73–84 °F.

What size tank do bettas and ember tetras need together?

At least 5 gal, set by the betta. Add space for each extra fish.