Can discus live with gold barbs?

Verdict
No

No. Discus and gold barbs should not share a tank. No shared temperature. Discus need 82–88°F, gold barbs need 64–75°F.

DiscusDiscus82–88°F · pH 5.5–7 Gold barbGold barb64–75°F · pH 6–8

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Discus 82–88°Gold barb 64–75°
The ranges do not meet, so one of them would always be too warm or too cold.
456789Both: 6–7Discus 5.5–7Gold barb 6–8
The green band is the pH both tolerate.

Size to scale

Discus · 6 inGold barb · 3 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

DiscusGold barb
Temperature82–88 °F64–75 °F
pH5.5–76–8
Adult size6.0 in3.0 in
Minimum tank55 gal20 gal
TemperamentPeacefulPeaceful
Swims atMiddleMiddle
GroupGroups of 5+Groups of 6+
DietCarnivoreOmnivore

Better tank mates for discus

All discus tank mates

Better tank mates for gold barbs

All gold barb tank mates

Questions

Can discus live with gold barbs?

No. Discus and gold barbs should not share a tank. No shared temperature. Discus need 82–88°F, gold barbs need 64–75°F.

What temperature suits both discus and gold barbs?

None. Discus need 82–88 °F and gold barbs need 64–75 °F, so the ranges do not meet.

What size tank do discus and gold barbs need together?

At least 55 gal, set by the discus. Add space for each extra fish.