We got Dozer when he was about 2 inches long in September of last year, he's about 8 inches now and seems to have slowed down growing. We don't feed live food because he has tank mates that are smaller than he is and i don't want him to eat them.
He eats frozen silversides and frozen krill, some shrimp from the butcher, bloodworms and brine shrimp that he steals from the smaller fish.. I feed him about the same amount twice a day, when the lights come on in the morning and just before they go out at night.