Can zebra danios live with arowanas?

Verdict
No

No. Zebra danios and arowanas should not share a tank. An adult silver arowana eats fish that fit in its mouth, and at 2 inches zebra danios do.

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–77°Zebra danio 65–77°Silver arowana 75–86°
The green band is the temperature range both can live in.
456789Both: 6.5–7Zebra danio 6.5–8Silver arowana 6–7
The green band is the pH both tolerate.

Size to scale

Zebra danio · 2 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 danioSilver arowana
Temperature65–77 °F75–86 °F
pH6.5–86–7
Adult size2.0 in36.0 in
Minimum tank10 gal250 gal
TemperamentPeacefulAggressive
Swims atTopTop
GroupGroups of 6+One per tank
DietOmnivoreCarnivore

Better tank mates for zebra danios

All zebra danio tank mates

Questions

Can zebra danios live with arowanas?

No. Zebra danios and arowanas should not share a tank. An adult silver arowana eats fish that fit in its mouth, and at 2 inches zebra danios do.

What temperature suits both zebra danios and arowanas?

75–77 °F. Zebra danios need 65–77 °F, arowanas need 75–86 °F.

What size tank do zebra danios and arowanas need together?

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