I recently setup my tank and the tank is cycled. I got 6 peacocks 4 days ago in a 90 gallon tank and 2 of them seems to not eat. They would would eat the food take a bite or two and spit it out and grab the next pellet. I am feeding them NLS 1mm pellets. the other 4 seems to be eating well. Any idea if something is wrong with my fish? or are they picky with the food or getting use to the new tank? Should i be worried?