NIce fry. I wouldn't say NEVER listen to your lfs, as some can be knowlegeable. But most are not. The best food to feed them is BBS ( Baby Brine Shrimp) You can either hatch it ( and they are only REALLY nutritious right after hatching), or buy it frosen ( alot easier, just break a piece of and put it in the tank, most definatley better then Hikari First Bites).
I ran out of BBS and had to get some Hikari First Bites, and they work pretty good, but nothing compared to BBS. BBS have a very high Protien consitancy, and that is what makes your fry grow. Also, your fry wont start eating till they are free-swimming.