Ok well fair enough, but I still feel (personally, and this isnt any kind of an attack on you or anyone else) that once you find these things out, like how big they will get, that the owner of these giant cats, or arowanas, gars or other large fish should be given away to a sensable home (Wharf in your case) as soon a possable, because even though it may not be proven that fish will suffer in tanks that will eventually be too small for them, they should still get the space required as early on in their lives as possable. In short, id take him to Wharf ASAP, as should anyone else with soon to be monsters.
Mike
P.S. If you have a digital camera, id love to see some shots of them both, I imagine that theyre stunning...