The ones that I had were in around the 8-10" mark, female was the largest, they are really tough customers. . . not that they can't be taken down a notch, but, they are true bullies. The females get a great orange band below the lateral line, not much more for color, but, they have a really intricate pattern of dots on the caudal peduncal. They are, in my experience, very interactive and quite interesting looking.