Can platies live with paradise fish?

Verdict
Yes

Yes. Platies and paradise fish get along in the same tank. Both are fine at 70–79°F. Plan on at least 20 gal.

PlatyPlaty70–80°F · pH 7–8.2 Paradise fishParadise fish61–79°F · pH 6–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 70–79°Platy 70–80°Paradise fish 61–79°
The green band is the temperature range both can live in.
456789Both: 7–8Platy 7–8.2Paradise fish 6–8
The green band is the pH both tolerate.

Size to scale

Platy · 2.5 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

PlatyParadise fish
Temperature70–80 °F61–79 °F
pH7–8.26–8
Adult size2.5 in3.5 in
Minimum tank10 gal20 gal
TemperamentPeacefulSemi-aggressive
Swims atMiddleTop
GroupGroups of 3+One per tank
DietOmnivoreOmnivore

Better tank mates for platies

All platy tank mates

Better tank mates for paradise fish

All paradise fish tank mates

Questions

Can platies live with paradise fish?

Yes. Platies and paradise fish get along in the same tank. Both are fine at 70–79°F. Plan on at least 20 gal.

What temperature suits both platies and paradise fish?

70–79 °F. Platies need 70–80 °F, paradise fish need 61–79 °F.

What size tank do platies and paradise fish need together?

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