Is it wrong for me to ask about tank size for an arowana on a thread about tank sizes on arowana?It was already pointed out to you in another thread that Asian Arowana rarely if ever get 36" in captivity, and that (as Dloks also says) they're usually closer to ~24". After that they mostly just get thicker (which bear in mind somewhat reduces their turn radius). LFS has a beautiful adult Super Red that's about 20-22" long and as thick or thicker than a well built guy's forearm.
And as the person who I asked that question to replied "don't listen to one person alone", I was asking to get opinions from multiple sources to cross-reference.
I've done enough of the keeping large fish in small tanks thing, so excuse me if I try to make absolutely certain that I know what I'd be getting into by even considering an arowana.