I would like to treat my fish with real food instead of the prepaired stuff I buy. I have creeks around that are LOADED with grass shrimp. I can get them year round and the creeks have no feild runoff so I don't have to worry about chemicals. But I'm wondering about parasites and such. there are fish in the creeks that swim up from the mississippi river and they might carry the parasites if there are any. so to u think I should feed them the live wild food or do u think the risk would be to great?