Can mystery snails live with red tail sharks?

Verdict
Yes

Yes. Mystery snails and red tail sharks get along in the same tank. Both are fine at 72–79°F. Plan on at least 55 gal.

Mystery snailMystery snail68–82°F · pH 7–8 Red tail sharkRed tail shark72–79°F · pH 6.5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–79°Mystery snail 68–82°Red tail shark 72–79°
The green band is the temperature range both can live in.
456789Both: 7–7.5Mystery snail 7–8Red tail shark 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Mystery snail · 2 inRed tail shark · 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 snailRed tail shark
Temperature68–82 °F72–79 °F
pH7–86.5–7.5
Adult size2.0 in5.0 in
Minimum tank5 gal55 gal
TemperamentPeacefulSemi-aggressive
Swims atBottomBottom
GroupAlone or in pairsOne per tank
DietOmnivoreOmnivore

Better tank mates for mystery snails

All mystery snail tank mates

Better tank mates for red tail sharks

All red tail shark tank mates

Questions

Can mystery snails live with red tail sharks?

Yes. Mystery snails and red tail sharks get along in the same tank. Both are fine at 72–79°F. Plan on at least 55 gal.

What temperature suits both mystery snails and red tail sharks?

72–79 °F. Mystery snails need 68–82 °F, red tail sharks need 72–79 °F.

What size tank do mystery snails and red tail sharks need together?

At least 55 gal, set by the red tail shark. Add space for each extra fish.