How big exactly?

[Whiptooth]

So how many gallons would be suitable for a Platinum arowana?

 

[Bderick67]

What species of platinum arowana?

 

[Whiptooth]

Osteoglossum bicirrhosum

 

[Dominator]

you mean silver arowan? Experienced keepers suggest 300 gallon, though bigger is always better. Don't be scammed by the petstore because "platinum" is a commercial term to attract customers, real platinums are rare.

 

[HungDang]

you mean silver arowan? Experienced keepers suggest 300 gallon, though bigger is always better. Don't be scammed by the petstore because "platinum" is a commercial term to attract customers, real platinums are rare.

real plat are not rare, it's very very rare!

 

[Motoxer777]

300+

 

[Bderick67]

Better in terms of dimensions instead of volume. You'll need a tank with a footprint of 96" x 30" to house that aro as an adult,