Can mystery snails live with swordtails?

Verdict
Yes

Yes. Mystery snails and swordtails get along in the same tank. Both are fine at 72–79°F. Plan on at least 30 gal.

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–79°Mystery snail 68–82°Swordtail 72–79°
The green band is the temperature range both can live in.
456789Both: 7–8Mystery snail 7–8Swordtail 7–8.3
The green band is the pH both tolerate.

Size to scale

Mystery snail · 2 inSwordtail · 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 snailSwordtail
Temperature68–82 °F72–79 °F
pH7–87–8.3
Adult size2.0 in5.0 in
Minimum tank5 gal30 gal
TemperamentPeacefulSemi-aggressive
Swims atBottomMiddle
GroupAlone or in pairsGroups of 3+
DietOmnivoreOmnivore

Better tank mates for mystery snails

All mystery snail tank mates

Better tank mates for swordtails

All swordtail tank mates

Questions

Can mystery snails live with swordtails?

Yes. Mystery snails and swordtails get along in the same tank. Both are fine at 72–79°F. Plan on at least 30 gal.

What temperature suits both mystery snails and swordtails?

72–79 °F. Mystery snails need 68–82 °F, swordtails need 72–79 °F.

What size tank do mystery snails and swordtails need together?

At least 30 gal, set by the swordtail. Add space for each extra fish.