Can flowerhorns live with peacock cichlids?

Verdict
No

No. Flowerhorns and peacock cichlids should not share a tank. Flowerhorns are aggressive and much bigger than peacock cichlids.

FlowerhornFlowerhorn80–89°F · pH 7–8 Peacock cichlidPeacock cichlid76–82°F · pH 7.8–8.6

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 80–82°Flowerhorn 80–89°Peacock cichlid 76–82°
The green band is the temperature range both can live in.
456789Both: 7.8–8Flowerhorn 7–8Peacock cichlid 7.8–8.6
The green band is the pH both tolerate.

Size to scale

Flowerhorn · 12 inPeacock cichlid · 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

FlowerhornPeacock cichlid
Temperature80–89 °F76–82 °F
pH7–87.8–8.6
Adult size12.0 in6.0 in
Minimum tank75 gal55 gal
TemperamentAggressiveSemi-aggressive
Swims atMiddleMiddle
GroupOne per tankGroups of 4+
DietCarnivoreCarnivore

Better tank mates for peacock cichlids

All peacock cichlid tank mates

Questions

Can flowerhorns live with peacock cichlids?

No. Flowerhorns and peacock cichlids should not share a tank. Flowerhorns are aggressive and much bigger than peacock cichlids.

What temperature suits both flowerhorns and peacock cichlids?

80–82 °F. Flowerhorns need 80–89 °F, peacock cichlids need 76–82 °F.

What size tank do flowerhorns and peacock cichlids need together?

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