Can cherry barbs live with boesemani rainbowfish?

Verdict
Yes

Yes. Cherry barbs and boesemani rainbowfish make a good pair. Both are fine at 75–81°F. Plan on at least 30 gal.

Cherry barbCherry barb73–81°F · pH 6–7.5 Boesemani rainbowfishBoesemani rainbowfish75–82°F · pH 7–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–81°Cherry barb 73–81°Boesemani rainbowfish 75–82°
The green band is the temperature range both can live in.
456789Both: 7–7.5Cherry barb 6–7.5Boesemani rainbowfish 7–8
The green band is the pH both tolerate.

Size to scale

Cherry barb · 2 inBoesemani rainbowfish · 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 barbBoesemani rainbowfish
Temperature73–81 °F75–82 °F
pH6–7.57–8
Adult size2.0 in4.0 in
Minimum tank20 gal30 gal
TemperamentPeacefulPeaceful
Swims atMiddleMiddle
GroupGroups of 6+Groups of 6+
DietOmnivoreOmnivore

Better tank mates for cherry barbs

All cherry barb tank mates

Better tank mates for boesemani rainbowfish

All boesemani rainbowfish tank mates

Questions

Can cherry barbs live with boesemani rainbowfish?

Yes. Cherry barbs and boesemani rainbowfish make a good pair. Both are fine at 75–81°F. Plan on at least 30 gal.

What temperature suits both cherry barbs and boesemani rainbowfish?

75–81 °F. Cherry barbs need 73–81 °F, boesemani rainbowfish need 75–82 °F.

What size tank do cherry barbs and boesemani rainbowfish need together?

At least 30 gal, set by the boesemani rainbowfish. Add space for each extra fish.