Can zebra plecos live with arowanas?

Verdict
No

No. Zebra plecos and arowanas should not share a tank. An adult silver arowana 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: 79–86°Zebra pleco 79–88°Silver arowana 75–86°
The green band is the temperature range both can live in.
456789Both: 6–7Zebra pleco 6–7.5Silver arowana 6–7
The green band is the pH both tolerate.

Size to scale

Zebra pleco · 3.5 inSilver arowana · 36 in0"6"12"18"24"30"36"
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

Zebra plecoSilver arowana
Temperature79–88 °F75–86 °F
pH6–7.56–7
Adult size3.5 in36.0 in
Minimum tank30 gal250 gal
TemperamentPeacefulAggressive
Swims atBottomTop
GroupAlone or in pairsOne per tank
DietCarnivoreCarnivore

Better tank mates for zebra plecos

All zebra pleco tank mates

Questions

Can zebra plecos live with arowanas?

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

What temperature suits both zebra plecos and arowanas?

79–86 °F. Zebra plecos need 79–88 °F, arowanas need 75–86 °F.

What size tank do zebra plecos and arowanas need together?

At least 250 gal, set by the silver arowana. Add space for each extra fish.