had the same issue myself after i added my clowns, the male wouldnt eat.
after tyring mysis, brine (he took one bite), arcti pods, nothing seemd to apeal to him, after the 3rd or 4th day i was really getting worried that he wouldnt make it.
i went to the lfs and picked up the formula one flakes and pellet food, when i tried feeding that i noticed he pecked at it a little so i figured there was hope.
i had heard garlic is suppose to make them hungry or more willing to eat so i soaked some brine in a couple drops of garlic juice since he took a bite of that along with some selcon a vitamin solution. and he ate without a problem after that.
so i dunno if it was just he was ready to eat after being in the tank a few days or what, but i think that garlic helped.
now he eats mysis and brine no problem im gonna try arctipods again this mornin and see if he will eat them.