Hi, I just got two P clowns a week ago. They have been doing well for the last week, except tonight I noticed one of them is having a hell of time trying to swim. He is struggling to keep himself upright and once in awhile he rests on the sand. He also didn't eat tonight. I'm hoping this is a temporary thing, but anyone have any idea what to do here? I have attached a video of him so hope that helps. Thanks in advance for al your help