wow these arowana need a pond... poor fish. 
[video=youtube;rQ8j3RjpDec]http://www.youtube.com/watch?v=rQ8j3RjpDec&feature=plcp[/video]
[video=youtube;rQ8j3RjpDec]http://www.youtube.com/watch?v=rQ8j3RjpDec&feature=plcp[/video]
Sure the tank is overstocked, but I've seen far more overstocked tanks from members here. From what I see there don't seem to be many ripped fins or signs of fighting, something you usually see in an aro comm. The tank owner also knows how to maintain the tank, and keep the wasteload in check.
Aside from the fact that some fish will outgrow the tank I don't really have a problem with this video.