Thos Rosie Reds, although bad for your Porc, would have more nutritional value than Ghost Shrimp.
You need to be feeding uncooked, shell on shrimp (readily available at your local grocery store) and meaty supplements (muscles, scallops, clams, etc).
Rosies, like all freshwater fish fed to saltwater fish, will cause liver disease. Ghost Shrimp, while fun to feed, have absolutely no nutritional value. It'd be like you eating nothing but lettuce for the rest of your life.