Can crayfish live with assassin snails?

Verdict
No

No. Crayfish and assassin snails should not share a tank. Crayfish hunt snails, so assassin snails will be eaten.

CrayfishCrayfish65–77°F · pH 6.5–8 Assassin snailAssassin snail75–80°F · pH 7–8

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–77°Crayfish 65–77°Assassin snail 75–80°
The green band is the temperature range both can live in.
456789Both: 7–8Crayfish 6.5–8Assassin snail 7–8
The green band is the pH both tolerate.

Size to scale

Crayfish · 5 inAssassin snail · 1 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

CrayfishAssassin snail
Temperature65–77 °F75–80 °F
pH6.5–87–8
Adult size5.0 in1.0 in
Minimum tank20 gal5 gal
TemperamentAggressivePeaceful
Swims atBottomBottom
GroupOne per tankAlone or in pairs
DietOmnivoreCarnivore

Better tank mates for crayfish

All crayfish tank mates

Better tank mates for assassin snails

All assassin snail tank mates

Questions

Can crayfish live with assassin snails?

No. Crayfish and assassin snails should not share a tank. Crayfish hunt snails, so assassin snails will be eaten.

What temperature suits both crayfish and assassin snails?

75–77 °F. Crayfish need 65–77 °F, assassin snails need 75–80 °F.

What size tank do crayfish and assassin snails need together?

At least 20 gal, set by the crayfish. Add space for each extra fish.