I think my tank is fine for him some may disagree but the LFS has a 3 ft RTC in a 300 gal and hes been in there for years along with some other nice fish and hes fine. Some may argue its to small but there in tilted to there opinion but mine is he will be happy. People keep birds in cages smaller then my tank, and if someone can argue its to small I can argue any tank is to small compared to a lake river or or ocean, and chances are some guy with a 55g tank to 100g tank would of ended up buying him and that would be much worse then a 450. So thats my two sense