Can bristlenose plecos live with assassin snails?

Verdict
Yes

Yes. Bristlenose plecos and assassin snails get along in the same tank. Both are fine at 75–80°F. Plan on at least 30 gal.

Bristlenose plecoBristlenose pleco73–81°F · pH 6.5–7.5 Assassin snailAssassin snail75–80°F · pH 7–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–80°Bristlenose pleco 73–81°Assassin snail 75–80°
The green band is the temperature range both can live in.
456789Both: 7–7.5Bristlenose pleco 6.5–7.5Assassin snail 7–8
The green band is the pH both tolerate.

Size to scale

Bristlenose pleco · 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

Bristlenose plecoAssassin snail
Temperature73–81 °F75–80 °F
pH6.5–7.57–8
Adult size5.0 in1.0 in
Minimum tank30 gal5 gal
TemperamentPeacefulPeaceful
Swims atBottomBottom
GroupAlone or in pairsAlone or in pairs
DietHerbivoreCarnivore

Better tank mates for bristlenose plecos

All bristlenose pleco tank mates

Better tank mates for assassin snails

All assassin snail tank mates

Questions

Can bristlenose plecos live with assassin snails?

Yes. Bristlenose plecos and assassin snails get along in the same tank. Both are fine at 75–80°F. Plan on at least 30 gal.

What temperature suits both bristlenose plecos and assassin snails?

75–80 °F. Bristlenose plecos need 73–81 °F, assassin snails need 75–80 °F.

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

At least 30 gal, set by the bristlenose pleco. Add space for each extra fish.