Can guppies live with cherry barbs?

Verdict
Yes

Yes. Guppies and cherry barbs get along in the same tank. Both are fine at 73–81°F. Plan on at least 20 gal.

GuppyGuppy72–82°F · pH 6.8–7.8 Cherry barbCherry barb73–81°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 73–81°Guppy 72–82°Cherry barb 73–81°
The green band is the temperature range both can live in.
456789Both: 6.8–7.5Guppy 6.8–7.8Cherry barb 6–7.5
The green band is the pH both tolerate.

Size to scale

Guppy · 2 inCherry barb · 2 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

GuppyCherry barb
Temperature72–82 °F73–81 °F
pH6.8–7.86–7.5
Adult size2.0 in2.0 in
Minimum tank10 gal20 gal
TemperamentPeacefulPeaceful
Swims atTopMiddle
GroupGroups of 3+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for guppies

All guppy tank mates

Better tank mates for cherry barbs

All cherry barb tank mates

Questions

Can guppies live with cherry barbs?

Yes. Guppies and cherry barbs get along in the same tank. Both are fine at 73–81°F. Plan on at least 20 gal.

What temperature suits both guppies and cherry barbs?

73–81 °F. Guppies need 72–82 °F, cherry barbs need 73–81 °F.

What size tank do guppies and cherry barbs need together?

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