Can oscars live with mystery snails?

Verdict
Yes, with care

Yes, with care. Oscars and mystery snails can share a tank, but watch one thing. Large oscars crack or pick at small snails. A big mystery snail has better odds than a ramshorn.

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 74–81°Oscar 74–81°Mystery snail 68–82°
The green band is the temperature range both can live in.
456789Both: 7–8Oscar 6–8Mystery snail 7–8
The green band is the pH both tolerate.

Size to scale

Oscar · 12 inMystery snail · 2 in0"2"4"6"8"10"12"
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

OscarMystery snail
Temperature74–81 °F68–82 °F
pH6–87–8
Adult size12.0 in2.0 in
Minimum tank75 gal5 gal
TemperamentSemi-aggressivePeaceful
Swims atMiddleBottom
GroupAlone or in pairsAlone or in pairs
DietCarnivoreOmnivore

Better tank mates for oscars

All oscar tank mates

Better tank mates for mystery snails

All mystery snail tank mates

Questions

Can oscars live with mystery snails?

Yes, with care. Oscars and mystery snails can share a tank, but watch one thing. Large oscars crack or pick at small snails. A big mystery snail has better odds than a ramshorn.

What temperature suits both oscars and mystery snails?

74–81 °F. Oscars need 74–81 °F, mystery snails need 68–82 °F.

What size tank do oscars and mystery snails need together?

At least 75 gal, set by the oscar. Add space for each extra fish.