i purchased 2 tank- raised false perc. clowns a week ago, both about the same size (about an inch) but one is hardly eating. I have fed them mysis shrimp, blood worms and some flake food and it will hardly nibble at the food if it eats at all. Both look very healthy though having very nice color and personality. do they have any favorite foods so i can try to convince it to eat? any help will be greatly appreciated. thanks.