Can gold barbs live with pygmy corys?

Verdict
Yes

Yes. Gold barbs and pygmy corys get along in the same tank. Both are fine at 72–75°F. Plan on at least 20 gal.

Gold barbGold barb64–75°F · pH 6–8 Pygmy coryPygmy cory72–79°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–75°Gold barb 64–75°Pygmy cory 72–79°
The green band is the temperature range both can live in.
456789Both: 6–7.5Gold barb 6–8Pygmy cory 6–7.5
The green band is the pH both tolerate.

Size to scale

Gold barb · 3 inPygmy cory · 1 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

Gold barbPygmy cory
Temperature64–75 °F72–79 °F
pH6–86–7.5
Adult size3.0 in1.0 in
Minimum tank20 gal10 gal
TemperamentPeacefulPeaceful
Swims atMiddleMiddle
GroupGroups of 6+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for gold barbs

All gold barb tank mates

Better tank mates for pygmy corys

All pygmy cory tank mates

Questions

Can gold barbs live with pygmy corys?

Yes. Gold barbs and pygmy corys get along in the same tank. Both are fine at 72–75°F. Plan on at least 20 gal.

What temperature suits both gold barbs and pygmy corys?

72–75 °F. Gold barbs need 64–75 °F, pygmy corys need 72–79 °F.

What size tank do gold barbs and pygmy corys need together?

At least 20 gal, set by the gold barb. Add space for each extra fish.