Can serpae tetras live with dwarf neon rainbowfish?

Verdict
Yes

Yes, serpae tetras and dwarf neon rainbowfish can live together. Both are fine at 75–79°F. Plan on at least 20 gal.

Serpae tetraSerpae tetra72–79°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: 75–79°Serpae tetra 72–79°Dwarf neon rainbowfish 75–82°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Serpae tetra 6–7.5Dwarf neon rainbowfish 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Serpae tetra · 1.75 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

Serpae tetraDwarf neon rainbowfish
Temperature72–79 °F75–82 °F
pH6–7.56.5–7.5
Adult size1.75 in2.5 in
Minimum tank20 gal20 gal
TemperamentSemi-aggressivePeaceful
Swims atMiddleMiddle
GroupGroups of 6+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for serpae tetras

All serpae tetra tank mates

Better tank mates for dwarf neon rainbowfish

All dwarf neon rainbowfish tank mates

Questions

Can serpae tetras live with dwarf neon rainbowfish?

Yes, serpae tetras and dwarf neon rainbowfish can live together. Both are fine at 75–79°F. Plan on at least 20 gal.

What temperature suits both serpae tetras and dwarf neon rainbowfish?

75–79 °F. Serpae tetras need 72–79 °F, dwarf neon rainbowfish need 75–82 °F.

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

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