Can bettas live with electric blue acaras?

Verdict
Yes, with care

Yes, with care. Bettas and electric blue acaras can share a tank, but watch one thing. Electric blue acaras are much bigger and pushier than bettas, which are slow and easy to bully at feeding time.

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 76–82°Betta 76–82°Electric blue acara 72–82°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Betta 6.5–7.5Electric blue acara 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Betta · 2.5 inElectric blue acara · 6 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

BettaElectric blue acara
Temperature76–82 °F72–82 °F
pH6.5–7.56.5–7.5
Adult size2.5 in6.0 in
Minimum tank5 gal30 gal
TemperamentSemi-aggressiveSemi-aggressive
Swims atTopMiddle
GroupOne per tankAlone or in pairs
DietCarnivoreOmnivore

Better tank mates for bettas

All betta tank mates

Better tank mates for electric blue acaras

All electric blue acara tank mates

Questions

Can bettas live with electric blue acaras?

Yes, with care. Bettas and electric blue acaras can share a tank, but watch one thing. Electric blue acaras are much bigger and pushier than bettas, which are slow and easy to bully at feeding time.

What temperature suits both bettas and electric blue acaras?

76–82 °F. Bettas need 76–82 °F, electric blue acaras need 72–82 °F.

What size tank do bettas and electric blue acaras need together?

At least 30 gal, set by the electric blue acara. Add space for each extra fish.