Can discus live with paradise fish?

Verdict
No

No. Discus and paradise fish should not share a tank. No shared temperature. Discus need 82–88°F, paradise fish need 61–79°F.

DiscusDiscus82–88°F · pH 5.5–7 Paradise fishParadise fish61–79°F · pH 6–8

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Discus 82–88°Paradise fish 61–79°
The ranges do not meet, so one of them would always be too warm or too cold.
456789Both: 6–7Discus 5.5–7Paradise fish 6–8
The green band is the pH both tolerate.

Size to scale

Discus · 6 inParadise fish · 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

DiscusParadise fish
Temperature82–88 °F61–79 °F
pH5.5–76–8
Adult size6.0 in3.5 in
Minimum tank55 gal20 gal
TemperamentPeacefulSemi-aggressive
Swims atMiddleTop
GroupGroups of 5+One per tank
DietCarnivoreOmnivore

Better tank mates for discus

All discus tank mates

Better tank mates for paradise fish

All paradise fish tank mates

Questions

Can discus live with paradise fish?

No. Discus and paradise fish should not share a tank. No shared temperature. Discus need 82–88°F, paradise fish need 61–79°F.

What temperature suits both discus and paradise fish?

None. Discus need 82–88 °F and paradise fish need 61–79 °F, so the ranges do not meet.

What size tank do discus and paradise fish need together?

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