Can gold barbs live with clown plecos?

Verdict
Yes

Yes. Gold barbs and clown plecos make a good pair. Both are fine at 73–75°F. Plan on at least 20 gal.

Gold barbGold barb64–75°F · pH 6–8 Clown plecoClown pleco73–82°F · pH 6.5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 73–75°Gold barb 64–75°Clown pleco 73–82°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Gold barb 6–8Clown pleco 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Gold barb · 3 inClown pleco · 3.5 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 barbClown pleco
Temperature64–75 °F73–82 °F
pH6–86.5–7.5
Adult size3.0 in3.5 in
Minimum tank20 gal20 gal
TemperamentPeacefulPeaceful
Swims atMiddleBottom
GroupGroups of 6+Alone or in pairs
DietOmnivoreHerbivore

Better tank mates for gold barbs

All gold barb tank mates

Better tank mates for clown plecos

All clown pleco tank mates

Questions

Can gold barbs live with clown plecos?

Yes. Gold barbs and clown plecos make a good pair. Both are fine at 73–75°F. Plan on at least 20 gal.

What temperature suits both gold barbs and clown plecos?

73–75 °F. Gold barbs need 64–75 °F, clown plecos need 73–82 °F.

What size tank do gold barbs and clown plecos need together?

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