Can black skirt tetras live with ramshorn snails?

Verdict
Yes

Yes. Black skirt tetras and ramshorn snails make a good pair. Both are fine at 70–80°F. Plan on at least 15 gal.

Black skirt tetraBlack skirt tetra70–80°F · pH 6–7.5 Ramshorn snailRamshorn snail70–80°F · pH 7–8

Why it works

Water side by side

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

Size to scale

Black skirt tetra · 2.5 inRamshorn 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 tetraRamshorn snail
Temperature70–80 °F70–80 °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
DietOmnivoreOmnivore

Better tank mates for black skirt tetras

All black skirt tetra tank mates

Better tank mates for ramshorn snails

All ramshorn snail tank mates

Questions

Can black skirt tetras live with ramshorn snails?

Yes. Black skirt tetras and ramshorn snails make a good pair. Both are fine at 70–80°F. Plan on at least 15 gal.

What temperature suits both black skirt tetras and ramshorn snails?

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

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

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