Can ramshorn snails live with black neon tetras?

Verdict
Yes

Yes. Ramshorn snails and black neon tetras get along in the same tank. Both are fine at 73–80°F. Plan on at least 15 gal.

Ramshorn snailRamshorn snail70–80°F · pH 7–8 Black neon tetraBlack neon tetra73–81°F · pH 5.5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 73–80°Ramshorn snail 70–80°Black neon tetra 73–81°
The green band is the temperature range both can live in.
456789Both: 7–7.5Ramshorn snail 7–8Black neon tetra 5.5–7.5
The green band is the pH both tolerate.

Size to scale

Ramshorn snail · 1 inBlack neon tetra · 1.5 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

Ramshorn snailBlack neon tetra
Temperature70–80 °F73–81 °F
pH7–85.5–7.5
Adult size1.0 in1.5 in
Minimum tank5 gal15 gal
TemperamentPeacefulPeaceful
Swims atBottomMiddle
GroupAlone or in pairsGroups of 6+
DietOmnivoreOmnivore

Better tank mates for ramshorn snails

All ramshorn snail tank mates

Better tank mates for black neon tetras

All black neon tetra tank mates

Questions

Can ramshorn snails live with black neon tetras?

Yes. Ramshorn snails and black neon tetras get along in the same tank. Both are fine at 73–80°F. Plan on at least 15 gal.

What temperature suits both ramshorn snails and black neon tetras?

73–80 °F. Ramshorn snails need 70–80 °F, black neon tetras need 73–81 °F.

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

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