Can serpae tetras live with assassin snails?

Verdict
Yes

Yes, serpae tetras and assassin snails can live together. Both are fine at 75–79°F. Plan on at least 20 gal.

Serpae tetraSerpae tetra72–79°F · pH 6–7.5 Assassin snailAssassin snail75–80°F · pH 7–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–79°Serpae tetra 72–79°Assassin snail 75–80°
The green band is the temperature range both can live in.
456789Both: 7–7.5Serpae tetra 6–7.5Assassin snail 7–8
The green band is the pH both tolerate.

Size to scale

Serpae tetra · 1.75 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

Serpae tetraAssassin snail
Temperature72–79 °F75–80 °F
pH6–7.57–8
Adult size1.75 in1.0 in
Minimum tank20 gal5 gal
TemperamentSemi-aggressivePeaceful
Swims atMiddleBottom
GroupGroups of 6+Alone or in pairs
DietOmnivoreCarnivore

Better tank mates for serpae tetras

All serpae tetra tank mates

Better tank mates for assassin snails

All assassin snail tank mates

Questions

Can serpae tetras live with assassin snails?

Yes, serpae tetras and assassin snails can live together. Both are fine at 75–79°F. Plan on at least 20 gal.

What temperature suits both serpae tetras and assassin snails?

75–79 °F. Serpae tetras need 72–79 °F, assassin snails need 75–80 °F.

What size tank do serpae tetras and assassin snails need together?

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