So it seems as if the general wisdom is not to have more than one of the same type of tang in the same tank. Ive also been told that one should avoid the same general body type to avoid aggression issues. That being said, I just watched the video from Mr Satltwater Tanks showing multiple yellow tangs and other tangs all together in a fairly small space. Have I misread the general wisdom or is there something else that Im missing here. I have a 180 gallon tank with a yellow and a powder brown tang. Id like to have more but I ve always avoided it to prevent aggression. Thoughts?