That's great - did you get those clowns when they were already large or did you grow them from youth? I have a bunch but they are tiny, they never seem to get any bigger.
How big is your big distichodus, by the way?
The little guy has gotten much larger since that picture. He is really richly colored and just about the same size that my original one was (from the photo with the con) when I got him... so that means I ought to have at least another year or two of him being bright red.