Can goldfish live with assassin snails?

Verdict

No. Goldfish and assassin snails should not share a tank. Goldfish are coldwater animals (60–74°F); assassin snails need 75–80°F. No temperature suits both.

Goldfish60–74°F · pH 7–8

Assassin snail75–80°F · pH 7–8

What to watch

Deal breakerGoldfish are coldwater animals (60–74°F); assassin snails need 75–80°F. No temperature suits both.
Watch outLarge goldfish crack or pick at small snails. A big mystery snail has better odds than a ramshorn.

What works

pH 7–8 suits both.

Water side by side

The ranges do not meet, so one of them would always be too warm or too cold.

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

	Goldfish	Assassin snail
Temperature	60–74 °F	75–80 °F
pH	7–8	7–8
Adult size	10.0 in	1.0 in
Minimum tank	40 gal	5 gal
Temperament	Peaceful	Peaceful
Swims at	All levels	Bottom
Group	Alone or in pairs	Alone or in pairs
Diet	Omnivore	Carnivore

Better tank mates for goldfish

All goldfish tank mates

Better tank mates for assassin snails

All assassin snail tank mates

Questions

Can goldfish live with assassin snails?

No. Goldfish and assassin snails should not share a tank. Goldfish are coldwater animals (60–74°F); assassin snails need 75–80°F. No temperature suits both.

What temperature suits both goldfish and assassin snails?

None. Goldfish need 60–74 °F and assassin snails need 75–80 °F, so the ranges do not meet.

What size tank do goldfish and assassin snails need together?

At least 40 gal, set by the goldfish. Add space for each extra fish.