Can cherry barbs live with dwarf neon rainbowfish?

Verdict
Yes

Yes. Cherry barbs and dwarf neon rainbowfish make a good pair. Both are fine at 75–81°F. Plan on at least 20 gal.

Cherry barbCherry barb73–81°F · pH 6–7.5 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: 75–81°Cherry barb 73–81°Dwarf neon rainbowfish 75–82°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Cherry barb 6–7.5Dwarf neon rainbowfish 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Cherry barb · 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

Cherry barbDwarf neon rainbowfish
Temperature73–81 °F75–82 °F
pH6–7.56.5–7.5
Adult size2.0 in2.5 in
Minimum tank20 gal20 gal
TemperamentPeacefulPeaceful
Swims atMiddleMiddle
GroupGroups of 6+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for cherry barbs

All cherry barb tank mates

Better tank mates for dwarf neon rainbowfish

All dwarf neon rainbowfish tank mates

Questions

Can cherry barbs live with dwarf neon rainbowfish?

Yes. Cherry barbs and dwarf neon rainbowfish make a good pair. Both are fine at 75–81°F. Plan on at least 20 gal.

What temperature suits both cherry barbs and dwarf neon rainbowfish?

75–81 °F. Cherry barbs need 73–81 °F, dwarf neon rainbowfish need 75–82 °F.

What size tank do cherry barbs and dwarf neon rainbowfish need together?

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