I think this maybe the clown in question. The photos on the site are not very good though.
http://www.fishindex.com/phpinfo//36/1-1//1467
Also, I have a question regarding another species of clown;
In my tank are two paired up true percs. They have been in the tank for about 1 yr. One of the two continues to get darker in color. It looks like bruiser the clown. Is this color change a part of thier mating or age

I'd take a photo but I don't have a place to put it.
Kari