My young shoal at 1inches each was feeding on Hikari Bio-Gold pellets for the first two weeks...I then introduced Krill, bloodworms, and white fish fillets....Now at 2inches each, they feed greedily on mealworms, fish fillets, and Krill, but spit the pellets out....Has this happen to any of you????I do not mind buying them fresh fish, but should I be worried about the lack of vitamins they will not get from pellets????Thanks