Can lemon tetras live with dwarf neon rainbowfish?

Verdict
Yes

Yes. Lemon tetras and dwarf neon rainbowfish get along in the same tank. Both are fine at 75–82°F. Plan on at least 20 gal.

Lemon tetraLemon tetra72–82°F · pH 5.5–7.5 Dwarf neon rainbowfishDwarf neon rainbowfish75–82°F · pH 6.5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–82°Lemon tetra 72–82°Dwarf neon rainbowfish 75–82°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Lemon tetra 5.5–7.5Dwarf neon rainbowfish 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Lemon tetra · 2 inDwarf neon rainbowfish · 2.5 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

Lemon tetraDwarf neon rainbowfish
Temperature72–82 °F75–82 °F
pH5.5–7.56.5–7.5
Adult size2.0 in2.5 in
Minimum tank15 gal20 gal
TemperamentPeacefulPeaceful
Swims atMiddleMiddle
GroupGroups of 6+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for lemon tetras

All lemon tetra tank mates

Better tank mates for dwarf neon rainbowfish

All dwarf neon rainbowfish tank mates

Questions

Can lemon tetras live with dwarf neon rainbowfish?

Yes. Lemon tetras and dwarf neon rainbowfish get along in the same tank. Both are fine at 75–82°F. Plan on at least 20 gal.

What temperature suits both lemon tetras and dwarf neon rainbowfish?

75–82 °F. Lemon tetras need 72–82 °F, dwarf neon rainbowfish need 75–82 °F.

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

At least 20 gal, set by the dwarf neon rainbowfish. Add space for each extra fish.