Can flowerhorns live with tinfoil barbs?

Verdict
No

No. Flowerhorns and tinfoil barbs should not share a tank. Flowerhorns are aggressive and will bully peaceful tinfoil barbs.

FlowerhornFlowerhorn80–89°F · pH 7–8 Tinfoil barbTinfoil barb72–80°F · pH 6.5–7.5

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 80°Flowerhorn 80–89°Tinfoil barb 72–80°
The green band is the temperature range both can live in.
456789Both: 7–7.5Flowerhorn 7–8Tinfoil barb 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Flowerhorn · 12 inTinfoil barb · 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

FlowerhornTinfoil barb
Temperature80–89 °F72–80 °F
pH7–86.5–7.5
Adult size12.0 in12.0 in
Minimum tank75 gal125 gal
TemperamentAggressivePeaceful
Swims atMiddleMiddle
GroupOne per tankGroups of 5+
DietCarnivoreOmnivore

Better tank mates for tinfoil barbs

All tinfoil barb tank mates

Questions

Can flowerhorns live with tinfoil barbs?

No. Flowerhorns and tinfoil barbs should not share a tank. Flowerhorns are aggressive and will bully peaceful tinfoil barbs.

What temperature suits both flowerhorns and tinfoil barbs?

80–80 °F. Flowerhorns need 80–89 °F, tinfoil barbs need 72–80 °F.

What size tank do flowerhorns and tinfoil barbs need together?

At least 125 gal, set by the tinfoil barb. Add space for each extra fish.