Silver Arowana

[Bogwoodbruce]

Length is far more importiant than width...or depth. Aros are VERY flexable...They grow fast...yes...but you should have slightly over a year. A 6' long tank...even if it's only 18" in width is a better choice. Eventually you'll want an 8' x 2'(or 3') x 2' tank.

Correct!

 

[Bderick67]

I believe silvers need to be kept in a tank that has a length at least 3 times the aro's lenght and a width at least equal to the aro. So with that being said, you could keep a silver in your tank until it was 16" long.

Keep in mind that silver aros grow about 1" per month on average, so if you start with a 4" silver you'd be needing a larger tank within a year. Also young aros unger 7-8" seem to have a high mortality rate, though if you are an experienced aquarist and understand water chemistry and acclimation, I don't believe this would be a problem.