wide tanks are nice, 2 reasons,takes up less length and has lots of surface area and allows you to have fish like snakeheads(I can't get them beacause I live in the us tough)... nice fish, IMO your tank should be able to house an udult... only problem is aggresssion, I have heard they are aggressive so if it gets out of hand I would get it a tank to be by itself... nice fish tough, hows the other fish in your big tank doing?