i agree with you as long, as its a 55 gal. long tank, not tall. Theres a lot of presure about that on here, people say that tangs need a lot of swimming room... well as far as i can tell so do about 3/4 th the fish you get, in fact im sure they would all love more swimming room. the problem is Tangs get ick real easy, if they get stressed, and i think as long asyou have a peacefull tank for it , he or she should be fine. goodluck Todd