I don't buy into that either,and don't get me wrong or anything ,i know all your guys/girls tangs are fat, healthy and living,but maybe it has alittle to do with tank size vs stock size.....The tang i got was the only tang in a 240 for years(so he says,i have no reason not to believe him) with just a few other smaller fish,he may have been just alttile more comfortable in his conditions...now hes in my 125,so maybe now he'll shrink:lol::mrgreen: