Can flowerhorns live with silver dollars?

Verdict
No

No. Flowerhorns and silver dollars should not share a tank. Flowerhorns are aggressive and will bully peaceful silver dollars.

FlowerhornFlowerhorn80–89°F · pH 7–8 Silver dollarSilver dollar75–82°F · pH 5–7

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 80–82°Flowerhorn 80–89°Silver dollar 75–82°
The green band is the temperature range both can live in.
456789Both: 7Flowerhorn 7–8Silver dollar 5–7
The green band is the pH both tolerate.

Size to scale

Flowerhorn · 12 inSilver dollar · 6 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

FlowerhornSilver dollar
Temperature80–89 °F75–82 °F
pH7–85–7
Adult size12.0 in6.0 in
Minimum tank75 gal75 gal
TemperamentAggressivePeaceful
Swims atMiddleMiddle
GroupOne per tankGroups of 5+
DietCarnivoreHerbivore

Better tank mates for silver dollars

All silver dollar tank mates

Questions

Can flowerhorns live with silver dollars?

No. Flowerhorns and silver dollars should not share a tank. Flowerhorns are aggressive and will bully peaceful silver dollars.

What temperature suits both flowerhorns and silver dollars?

80–82 °F. Flowerhorns need 80–89 °F, silver dollars need 75–82 °F.

What size tank do flowerhorns and silver dollars need together?

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