Can ember tetras live with electric blue acaras?

Verdict
Yes, with care

Yes, with care. Ember tetras and electric blue acaras can share a tank, but watch one thing. At 6 inches an electric blue acara can swallow a small ember tetra. Fast, alert fish usually stay out of reach.

Ember tetraEmber tetra73–84°F · pH 5.5–7 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: 73–82°Ember tetra 73–84°Electric blue acara 72–82°
The green band is the temperature range both can live in.
456789Both: 6.5–7Ember tetra 5.5–7Electric blue acara 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Ember tetra · 0.8 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

Ember tetraElectric blue acara
Temperature73–84 °F72–82 °F
pH5.5–76.5–7.5
Adult size0.8 in6.0 in
Minimum tank5 gal30 gal
TemperamentPeacefulSemi-aggressive
Swims atMiddleMiddle
GroupGroups of 6+Alone or in pairs
DietOmnivoreOmnivore

Better tank mates for ember tetras

All ember tetra tank mates

Better tank mates for electric blue acaras

All electric blue acara tank mates

Questions

Can ember tetras live with electric blue acaras?

Yes, with care. Ember tetras and electric blue acaras can share a tank, but watch one thing. At 6 inches an electric blue acara can swallow a small ember tetra. Fast, alert fish usually stay out of reach.

What temperature suits both ember tetras and electric blue acaras?

73–82 °F. Ember tetras need 73–84 °F, electric blue acaras need 72–82 °F.

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

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