Can cherry barbs live with serpae tetras?

Verdict
Yes

Yes, cherry barbs and serpae tetras can live together. Both are fine at 73–79°F. Plan on at least 20 gal.

Cherry barbCherry barb73–81°F · pH 6–7.5 Serpae tetraSerpae tetra72–79°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 73–79°Cherry barb 73–81°Serpae tetra 72–79°
The green band is the temperature range both can live in.
456789Both: 6–7.5Cherry barb 6–7.5Serpae tetra 6–7.5
The green band is the pH both tolerate.

Size to scale

Cherry barb · 2 inSerpae tetra · 1.75 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 barbSerpae tetra
Temperature73–81 °F72–79 °F
pH6–7.56–7.5
Adult size2.0 in1.75 in
Minimum tank20 gal20 gal
TemperamentPeacefulSemi-aggressive
Swims atMiddleMiddle
GroupGroups of 6+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for cherry barbs

All cherry barb tank mates

Better tank mates for serpae tetras

All serpae tetra tank mates

Questions

Can cherry barbs live with serpae tetras?

Yes, cherry barbs and serpae tetras can live together. Both are fine at 73–79°F. Plan on at least 20 gal.

What temperature suits both cherry barbs and serpae tetras?

73–79 °F. Cherry barbs need 73–81 °F, serpae tetras need 72–79 °F.

What size tank do cherry barbs and serpae tetras need together?

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