Can cherry barbs live with flowerhorns?

Verdict
No

No. Cherry barbs and flowerhorns should not share a tank. An adult flowerhorn eats fish that fit in its mouth, and at 2 inches cherry barbs do.

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 80–81°Cherry barb 73–81°Flowerhorn 80–89°
The green band is the temperature range both can live in.
456789Both: 7–7.5Cherry barb 6–7.5Flowerhorn 7–8
The green band is the pH both tolerate.

Size to scale

Cherry barb · 2 inFlowerhorn · 12 in0"2"4"6"8"10"12"
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 barbFlowerhorn
Temperature73–81 °F80–89 °F
pH6–7.57–8
Adult size2.0 in12.0 in
Minimum tank20 gal75 gal
TemperamentPeacefulAggressive
Swims atMiddleMiddle
GroupGroups of 6+One per tank
DietOmnivoreCarnivore

Better tank mates for cherry barbs

All cherry barb tank mates

Questions

Can cherry barbs live with flowerhorns?

No. Cherry barbs and flowerhorns should not share a tank. An adult flowerhorn eats fish that fit in its mouth, and at 2 inches cherry barbs do.

What temperature suits both cherry barbs and flowerhorns?

80–81 °F. Cherry barbs need 73–81 °F, flowerhorns need 80–89 °F.

What size tank do cherry barbs and flowerhorns need together?

At least 75 gal, set by the flowerhorn. Add space for each extra fish.