Can oscars live with ramshorn snails?

Verdict

Yes, with care

Yes, with care. Oscars and ramshorn 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.

Oscar74–81°F · pH 6–8

Ramshorn snail70–80°F · pH 7–8

What to watch

Watch outLarge oscars crack or pick at small snails. A big mystery snail has better odds than a ramshorn.
Watch outOscars grow to 12 inches and need 75 gallons, far more than a tank set up for ramshorn snails.

What works

Both are fine at 74–80°F.
pH 7–8 suits both.
They use different parts of the tank: oscars the mid, ramshorn snails the bottom.

Water side by side

The green band is the temperature range both can live in.

The green band is the pH both tolerate.

Size to scale

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

	Oscar	Ramshorn snail
Temperature	74–81 °F	70–80 °F
pH	6–8	7–8
Adult size	12.0 in	1.0 in
Minimum tank	75 gal	5 gal
Temperament	Semi-aggressive	Peaceful
Swims at	Middle	Bottom
Group	Alone or in pairs	Alone or in pairs
Diet	Carnivore	Omnivore

Better tank mates for oscars

All oscar tank mates

Better tank mates for ramshorn snails

All ramshorn snail tank mates

Questions

Can oscars live with ramshorn snails?

Yes, with care. Oscars and ramshorn 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 ramshorn snails?

74–80 °F. Oscars need 74–81 °F, ramshorn snails need 70–80 °F.

What size tank do oscars and ramshorn snails need together?

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