Yes the tank is a 180 and may be moving to my 300. Eagle i would recommend getting a smaller black if that works with the other fish considering they are laterally compressed and he is almost as tall as he is long. From others I have spoken to, Blacks are one of the slowest growing tangs around. Nothing like the Naso group. Also he eats sheets of algae by the truckload and is the maniac swimmer that my PBT is. Regards, Tim