Welcome to Mfk
I'd love to keep an Arowana myself and have wondered also. I was thinking of keeping a Silver, what kind were you thinking about? You might get more responses in the Arowana section.
Arowanas are very big fish, and if your going for a silver Arowana I'd go for a 300. And if your thinking of tank mates I'd get a 500-700 acrylic tank because acrylic is much lighter than glass.
Arowanas are very big fish, and if your going for a silver Arowana I'd go for a 300. And if your thinking of tank mates I'd get a 500-700 acrylic tank because acrylic is much lighter than glass.