Can pictus catfish live with arowanas?

Verdict
No

No. Pictus catfish and arowanas should not share a tank. An adult silver arowana eats fish that fit in its mouth, and at 5 inches pictus catfish do.

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–79°Pictus catfish 72–79°Silver arowana 75–86°
The green band is the temperature range both can live in.
456789Both: 6–7Pictus catfish 6–7.5Silver arowana 6–7
The green band is the pH both tolerate.

Size to scale

Pictus catfish · 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

Pictus catfishSilver arowana
Temperature72–79 °F75–86 °F
pH6–7.56–7
Adult size5.0 in36.0 in
Minimum tank55 gal250 gal
TemperamentSemi-aggressiveAggressive
Swims atBottomTop
GroupGroups of 3+One per tank
DietCarnivoreCarnivore

Better tank mates for pictus catfish

All pictus catfish tank mates

Questions

Can pictus catfish live with arowanas?

No. Pictus catfish and arowanas should not share a tank. An adult silver arowana eats fish that fit in its mouth, and at 5 inches pictus catfish do.

What temperature suits both pictus catfish and arowanas?

75–79 °F. Pictus catfish need 72–79 °F, arowanas need 75–86 °F.

What size tank do pictus catfish and arowanas need together?

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