Russ, it depends on the size of the fish when you get them and how big you expect them to get in the cages. If they are 2 inches long, I think Purina Game Fish Chow would work.
If they are 1 inch, Aquamax makes some fry pellets. However, some of them sink, so would be lost. That shouldn't be a problem with that small number of fish. There are an awful lot of tiny pellets in there. Actually, my larger BG like them pretty well.
BTW, I know nothing of YP but figure they would eat the same pellets as BG.
It's not about the fish. It's about the pond. Take care of the pond and the fish will be fine. PB subscriber since before it was in color.
Without a sense of urgency, Nothing ever gets done.
Boy, if I say "sic em", you'd better look for something to bite. Sam Shelley Rancher and Farmer Muleshoe Texas 1892-1985 RIP Grandpa