Can mystery snails live with platies?

Verdict
Yes

Yes. Mystery snails and platies get along in the same tank. Both are fine at 70–80°F. Plan on at least 10 gal.

Mystery snailMystery snail68–82°F · pH 7–8 PlatyPlaty70–80°F · pH 7–8.2

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 70–80°Mystery snail 68–82°Platy 70–80°
The green band is the temperature range both can live in.
456789Both: 7–8Mystery snail 7–8Platy 7–8.2
The green band is the pH both tolerate.

Size to scale

Mystery snail · 2 inPlaty · 2.5 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

Mystery snailPlaty
Temperature68–82 °F70–80 °F
pH7–87–8.2
Adult size2.0 in2.5 in
Minimum tank5 gal10 gal
TemperamentPeacefulPeaceful
Swims atBottomMiddle
GroupAlone or in pairsGroups of 3+
DietOmnivoreOmnivore

Better tank mates for mystery snails

All mystery snail tank mates

Better tank mates for platies

All platy tank mates

Questions

Can mystery snails live with platies?

Yes. Mystery snails and platies get along in the same tank. Both are fine at 70–80°F. Plan on at least 10 gal.

What temperature suits both mystery snails and platies?

70–80 °F. Mystery snails need 68–82 °F, platies need 70–80 °F.

What size tank do mystery snails and platies need together?

At least 10 gal, set by the platy. Add space for each extra fish.