Can goldfish live with gold barbs?

Verdict
Yes

Yes. Goldfish and gold barbs get along in the same tank. Both are fine at 64–74°F. Plan on at least 40 gal.

GoldfishGoldfish60–74°F · pH 7–8 Gold barbGold barb64–75°F · pH 6–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 64–74°Goldfish 60–74°Gold barb 64–75°
The green band is the temperature range both can live in.
456789Both: 7–8Goldfish 7–8Gold barb 6–8
The green band is the pH both tolerate.

Size to scale

Goldfish · 10 inGold barb · 3 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

GoldfishGold barb
Temperature60–74 °F64–75 °F
pH7–86–8
Adult size10.0 in3.0 in
Minimum tank40 gal20 gal
TemperamentPeacefulPeaceful
Swims atAll levelsMiddle
GroupAlone or in pairsGroups of 6+
DietOmnivoreOmnivore

Better tank mates for goldfish

All goldfish tank mates

Better tank mates for gold barbs

All gold barb tank mates

Questions

Can goldfish live with gold barbs?

Yes. Goldfish and gold barbs get along in the same tank. Both are fine at 64–74°F. Plan on at least 40 gal.

What temperature suits both goldfish and gold barbs?

64–74 °F. Goldfish need 60–74 °F, gold barbs need 64–75 °F.

What size tank do goldfish and gold barbs need together?

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