Yes Jim, I have noticed a distinct difference between 25fps (old matrox G200 card) and 60fps in the movement of the side-fins. This looks much better with 25fps. Also the mouth-open-feature is different, approx. every 3 seconds with 60fps, with 25fps much more seldom, oh no, it's just a difference in speed, when he opens his mouth (it is a male, or?).
But hey, the Lionfish looks great at all fps!