I bought this Blue Tang from Dudley about 6-8 months ago. He's a great fish, I like him a lot. Great personality and not skitish like my old one. The only thing is after I finish feeding him, he will swin around in a certain pattern and gulp a bunch of air and then releasing it while he swims down. He will do this for 30-40 minutes. None of my other tangs had this behavior before. It's nothing major but I'm just curious if other tangs you guys have might have this behavior and why it's doing it. Is he just retarded?
