Can goldfish live with electric blue acaras?

Verdict
No

No. Goldfish and electric blue acaras should not share a tank. Goldfish are coldwater animals (60–74°F); electric blue acaras need 72–82°F. They overlap only at 72–74°F, the edge of both ranges.

GoldfishGoldfish60–74°F · pH 7–8 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: 72–74°Goldfish 60–74°Electric blue acara 72–82°
The green band is the temperature range both can live in.
456789Both: 7–7.5Goldfish 7–8Electric blue acara 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Goldfish · 10 inElectric blue acara · 6 in0"2"4"6"8"10"
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

GoldfishElectric blue acara
Temperature60–74 °F72–82 °F
pH7–86.5–7.5
Adult size10.0 in6.0 in
Minimum tank40 gal30 gal
TemperamentPeacefulSemi-aggressive
Swims atAll levelsMiddle
GroupAlone or in pairsAlone or in pairs
DietOmnivoreOmnivore

Better tank mates for goldfish

All goldfish tank mates

Better tank mates for electric blue acaras

All electric blue acara tank mates

Questions

Can goldfish live with electric blue acaras?

No. Goldfish and electric blue acaras should not share a tank. Goldfish are coldwater animals (60–74°F); electric blue acaras need 72–82°F. They overlap only at 72–74°F, the edge of both ranges.

What temperature suits both goldfish and electric blue acaras?

72–74 °F. Goldfish need 60–74 °F, electric blue acaras need 72–82 °F.

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

At least 40 gal, set by the goldfish. Add space for each extra fish.