Can cherry barbs live with rosy barbs?

Verdict
Yes

Yes. Cherry barbs and rosy barbs make a good pair. Both are fine at 73–77°F. Plan on at least 30 gal.

Cherry barbCherry barb73–81°F · pH 6–7.5 Rosy barbRosy barb64–77°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 73–77°Cherry barb 73–81°Rosy barb 64–77°
The green band is the temperature range both can live in.
456789Both: 6–7.5Cherry barb 6–7.5Rosy barb 6–7.5
The green band is the pH both tolerate.

Size to scale

Cherry barb · 2 inRosy barb · 4 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 barbRosy barb
Temperature73–81 °F64–77 °F
pH6–7.56–7.5
Adult size2.0 in4.0 in
Minimum tank20 gal30 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 rosy barbs

All rosy barb tank mates

Questions

Can cherry barbs live with rosy barbs?

Yes. Cherry barbs and rosy barbs make a good pair. Both are fine at 73–77°F. Plan on at least 30 gal.

What temperature suits both cherry barbs and rosy barbs?

73–77 °F. Cherry barbs need 73–81 °F, rosy barbs need 64–77 °F.

What size tank do cherry barbs and rosy barbs need together?

At least 30 gal, set by the rosy barb. Add space for each extra fish.