Clownfish behavior - tail swishing?

[Elmo18]

For most of the day, my male gold-band maroon has been 'tail-swishing' around the cave area. The female doesn't do this. When the female goes out and swims the male follows, but every so often he goes back into the little cave area and does his tail swishing. Now my 25 gallon tank is a little bit full of particulate from all his swishing. He has moved about 1.5 inches of sand, making a noticeable depression. The male has also been "nudging" with his mouth on the button polyps. I don't have Wilkerson's book on Clownfishes or I would go look it up there first, so what do you guys think??? Is it normal like this?

-Elmo

[naser]

my pair does this. i seems more for food. trying to stir the bugs out of the sand. try to feed alittle more and see if it stops. or lessons. mine do it all the time but never make clouds.

[CaptainK]

I have one Percula and it does this behavior also. It has dug out, or fished out, a nice little hole for itself right next to its green open brain which it calls home.