Clown fish white face ?

[Mil26]

I've had my clown fish for about 3 months now they look healthy everyday when I look at them but for some reason every night after I turn of the lights about 1hr I check on them there eyes look all dilated and have there faces white I know for sure they do not have brooklynella its been going on for 2 days but when I first got them it was the same thing but was the other way around meaning every time I turned on the lights.. I would take pictures but my camera is crap..hard to see but I got a picture from Google to show a little what I'm trying to talk about PS: this happens when they go to sleep seems like they bump in to each other ..

 

[Waters]

That is pretty normal for all species of fish....after the lights go out, coloring becomes muted (and sometime changes all together i.e. Rabbitfish)

 

[ebushrow]

Most fish generally change color when they go to sleep....some get darker and some get lighter....it has to do with the lighting reaction with the pigmentation of the scales/skin from what I understand.

 

[reef4beer]

+1 to Waters reply, he should be fine as long as throughout the day he colors up.