Can goldfish live with platies?

Verdict
Yes, with care

Yes, with care. Goldfish and platies can share a tank, but watch one thing. A grown goldfish may treat small platies as food, especially at night.

GoldfishGoldfish60–74°F · pH 7–8 PlatyPlaty70–80°F · pH 7–8.2

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 70–74°Goldfish 60–74°Platy 70–80°
The green band is the temperature range both can live in.
456789Both: 7–8Goldfish 7–8Platy 7–8.2
The green band is the pH both tolerate.

Size to scale

Goldfish · 10 inPlaty · 2.5 in0"2"4"6"8"10"
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

GoldfishPlaty
Temperature60–74 °F70–80 °F
pH7–87–8.2
Adult size10.0 in2.5 in
Minimum tank40 gal10 gal
TemperamentPeacefulPeaceful
Swims atAll levelsMiddle
GroupAlone or in pairsGroups of 3+
DietOmnivoreOmnivore

Better tank mates for goldfish

All goldfish tank mates

Better tank mates for platies

All platy tank mates

Questions

Can goldfish live with platies?

Yes, with care. Goldfish and platies can share a tank, but watch one thing. A grown goldfish may treat small platies as food, especially at night.

What temperature suits both goldfish and platies?

70–74 °F. Goldfish need 60–74 °F, platies need 70–80 °F.

What size tank do goldfish and platies need together?

At least 40 gal, set by the goldfish. Add space for each extra fish.