Can clown plecos live with dwarf neon rainbowfish?

Verdict
Yes

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

Clown plecoClown pleco73–82°F · pH 6.5–7.5 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°Clown pleco 73–82°Dwarf neon rainbowfish 75–82°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Clown pleco 6.5–7.5Dwarf neon rainbowfish 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Clown pleco · 3.5 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

Clown plecoDwarf neon rainbowfish
Temperature73–82 °F75–82 °F
pH6.5–7.56.5–7.5
Adult size3.5 in2.5 in
Minimum tank20 gal20 gal
TemperamentPeacefulPeaceful
Swims atBottomMiddle
GroupAlone or in pairsGroups of 6+
DietHerbivoreOmnivore

Better tank mates for clown plecos

All clown pleco tank mates

Better tank mates for dwarf neon rainbowfish

All dwarf neon rainbowfish tank mates

Questions

Can clown plecos live with dwarf neon rainbowfish?

Yes. Clown plecos 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 clown plecos and dwarf neon rainbowfish?

75–82 °F. Clown plecos need 73–82 °F, dwarf neon rainbowfish need 75–82 °F.

What size tank do clown plecos and dwarf neon rainbowfish need together?

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