Can assassin snails live with clown plecos?

Verdict
Yes

Yes. Assassin snails and clown plecos make a good pair. Both are fine at 75–80°F. Plan on at least 20 gal.

Assassin snailAssassin snail75–80°F · pH 7–8 Clown plecoClown pleco73–82°F · pH 6.5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–80°Assassin snail 75–80°Clown pleco 73–82°
The green band is the temperature range both can live in.
456789Both: 7–7.5Assassin snail 7–8Clown pleco 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Assassin snail · 1 inClown pleco · 3.5 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

Assassin snailClown pleco
Temperature75–80 °F73–82 °F
pH7–86.5–7.5
Adult size1.0 in3.5 in
Minimum tank5 gal20 gal
TemperamentPeacefulPeaceful
Swims atBottomBottom
GroupAlone or in pairsAlone or in pairs
DietCarnivoreHerbivore

Better tank mates for assassin snails

All assassin snail tank mates

Better tank mates for clown plecos

All clown pleco tank mates

Questions

Can assassin snails live with clown plecos?

Yes. Assassin snails and clown plecos make a good pair. Both are fine at 75–80°F. Plan on at least 20 gal.

What temperature suits both assassin snails and clown plecos?

75–80 °F. Assassin snails need 75–80 °F, clown plecos need 73–82 °F.

What size tank do assassin snails and clown plecos need together?

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