Can black skirt tetras live with assassin snails?

Verdict
Yes

Yes, black skirt tetras and assassin snails can live together. Both are fine at 75–80°F. Plan on at least 15 gal.

Black skirt tetraBlack skirt tetra70–80°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: 75–80°Black skirt tetra 70–80°Assassin snail 75–80°
The green band is the temperature range both can live in.
456789Both: 7–7.5Black skirt tetra 6–7.5Assassin snail 7–8
The green band is the pH both tolerate.

Size to scale

Black skirt tetra · 2.5 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

Black skirt tetraAssassin snail
Temperature70–80 °F75–80 °F
pH6–7.57–8
Adult size2.5 in1.0 in
Minimum tank15 gal5 gal
TemperamentSemi-aggressivePeaceful
Swims atMiddleBottom
GroupGroups of 6+Alone or in pairs
DietOmnivoreCarnivore

Better tank mates for black skirt tetras

All black skirt tetra tank mates

Better tank mates for assassin snails

All assassin snail tank mates

Questions

Can black skirt tetras live with assassin snails?

Yes, black skirt tetras and assassin snails can live together. Both are fine at 75–80°F. Plan on at least 15 gal.

What temperature suits both black skirt tetras and assassin snails?

75–80 °F. Black skirt tetras need 70–80 °F, assassin snails need 75–80 °F.

What size tank do black skirt tetras and assassin snails need together?

At least 15 gal, set by the black skirt tetra. Add space for each extra fish.