Can flowerhorns live with zebra plecos?

Verdict
No

No. Flowerhorns and zebra plecos should not share a tank. An adult flowerhorn eats fish that fit in its mouth, and at 3.5 inches zebra plecos do.

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 80–88°Flowerhorn 80–89°Zebra pleco 79–88°
The green band is the temperature range both can live in.
456789Both: 7–7.5Flowerhorn 7–8Zebra pleco 6–7.5
The green band is the pH both tolerate.

Size to scale

Flowerhorn · 12 inZebra pleco · 3.5 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

FlowerhornZebra pleco
Temperature80–89 °F79–88 °F
pH7–86–7.5
Adult size12.0 in3.5 in
Minimum tank75 gal30 gal
TemperamentAggressivePeaceful
Swims atMiddleBottom
GroupOne per tankAlone or in pairs
DietCarnivoreCarnivore

Better tank mates for zebra plecos

All zebra pleco tank mates

Questions

Can flowerhorns live with zebra plecos?

No. Flowerhorns and zebra plecos should not share a tank. An adult flowerhorn eats fish that fit in its mouth, and at 3.5 inches zebra plecos do.

What temperature suits both flowerhorns and zebra plecos?

80–88 °F. Flowerhorns need 80–89 °F, zebra plecos need 79–88 °F.

What size tank do flowerhorns and zebra plecos need together?

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