A week ago I moved my shoal of celestial pearl danios to a different tank. I went on vacation for a week and just returned to find a large number of fry swimming around the tank from which I removed the adults! The only other residents in there are cherry shrimp. This tank has a large amount of java moss as the only plant. Can the fry survive on the same type of bio-film items that the shrimp eat, or should I buy something such as Hikari first bites? Right now the fry are about 5 mm and very skinny.