Can neon tetras live with lemon tetras?

Verdict
Yes

Yes. Neon tetras and lemon tetras make a good pair. Both are fine at 72–79°F. Plan on at least 15 gal.

Neon tetraNeon tetra72–79°F · pH 6–7 Lemon tetraLemon tetra72–82°F · pH 5.5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–79°Neon tetra 72–79°Lemon tetra 72–82°
The green band is the temperature range both can live in.
456789Both: 6–7Neon tetra 6–7Lemon tetra 5.5–7.5
The green band is the pH both tolerate.

Size to scale

Neon tetra · 1.5 inLemon tetra · 2 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

Neon tetraLemon tetra
Temperature72–79 °F72–82 °F
pH6–75.5–7.5
Adult size1.5 in2.0 in
Minimum tank10 gal15 gal
TemperamentPeacefulPeaceful
Swims atMiddleMiddle
GroupGroups of 6+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for neon tetras

All neon tetra tank mates

Better tank mates for lemon tetras

All lemon tetra tank mates

Questions

Can neon tetras live with lemon tetras?

Yes. Neon tetras and lemon tetras make a good pair. Both are fine at 72–79°F. Plan on at least 15 gal.

What temperature suits both neon tetras and lemon tetras?

72–79 °F. Neon tetras need 72–79 °F, lemon tetras need 72–82 °F.

What size tank do neon tetras and lemon tetras need together?

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