Can neon tetras live with paradise fish?

Verdict
Yes

Yes. Neon tetras and paradise fish make a good pair. Both are fine at 72–79°F. Plan on at least 20 gal.

Neon tetraNeon tetra72–79°F · pH 6–7 Paradise fishParadise fish61–79°F · pH 6–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–79°Neon tetra 72–79°Paradise fish 61–79°
The green band is the temperature range both can live in.
456789Both: 6–7Neon tetra 6–7Paradise fish 6–8
The green band is the pH both tolerate.

Size to scale

Neon tetra · 1.5 inParadise fish · 3.5 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

Neon tetraParadise fish
Temperature72–79 °F61–79 °F
pH6–76–8
Adult size1.5 in3.5 in
Minimum tank10 gal20 gal
TemperamentPeacefulSemi-aggressive
Swims atMiddleTop
GroupGroups of 6+One per tank
DietOmnivoreOmnivore

Better tank mates for neon tetras

All neon tetra tank mates

Better tank mates for paradise fish

All paradise fish tank mates

Questions

Can neon tetras live with paradise fish?

Yes. Neon tetras and paradise fish make a good pair. Both are fine at 72–79°F. Plan on at least 20 gal.

What temperature suits both neon tetras and paradise fish?

72–79 °F. Neon tetras need 72–79 °F, paradise fish need 61–79 °F.

What size tank do neon tetras and paradise fish need together?

At least 20 gal, set by the paradise fish. Add space for each extra fish.