Sorry to say the fry die of starvation. They eat food like micro organisms rarely available in aquariums but the adults are easy to care for. Ghost shrimp farms usually use ponds of water the shrimp breed and the micro organisms theyeat are there.
Well. I DO think infusoria would work.. I just don't think many people have the confidence to try it.. I use ti raise ghost shrimp.. Not really, lol.. I had multiple ghost shrimp in a HEAVILY planted 5 gallon with one betta.. They bred and had many babies.. I think why the fish actually survived is because I fed crushed up flakes and because of the naturally produced infusoria. I saw the Ghosties eating the Betta Flakes