Can black neon tetras live with electric blue acaras?

Verdict
Yes, with care

Yes, with care. Black neon tetras and electric blue acaras can share a tank, but watch one thing. A grown electric blue acara may treat small black neon tetras as food, especially at night.

Black neon tetraBlack neon tetra73–81°F · pH 5.5–7.5 Electric blue acaraElectric blue acara72–82°F · pH 6.5–7.5

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 73–81°Black neon tetra 73–81°Electric blue acara 72–82°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Black neon tetra 5.5–7.5Electric blue acara 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Black neon tetra · 1.5 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

Black neon tetraElectric blue acara
Temperature73–81 °F72–82 °F
pH5.5–7.56.5–7.5
Adult size1.5 in6.0 in
Minimum tank15 gal30 gal
TemperamentPeacefulSemi-aggressive
Swims atMiddleMiddle
GroupGroups of 6+Alone or in pairs
DietOmnivoreOmnivore

Better tank mates for black neon tetras

All black neon tetra tank mates

Better tank mates for electric blue acaras

All electric blue acara tank mates

Questions

Can black neon tetras live with electric blue acaras?

Yes, with care. Black neon tetras and electric blue acaras can share a tank, but watch one thing. A grown electric blue acara may treat small black neon tetras as food, especially at night.

What temperature suits both black neon tetras and electric blue acaras?

73–81 °F. Black neon tetras need 73–81 °F, electric blue acaras need 72–82 °F.

What size tank do black neon tetras and electric blue acaras need together?

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