My breeder pair laid some eggs about a week or so ago, and after getting a new tank, I basically forgot about them. The breeder pair laid some more eggs last night, and after waiting for them both to finish, I put the slate in the same tank as the other eggs. I woke up this morning and took a good look at the eggs, and I noticed a couple fry swimming around. After staring at that tank for a total of 30 minutes throughout the day, I still only noticed two. They still have their yolk sacs, so I don't have to feed them yet, but when I do, can I substitute the baby brine shrimp for frozen Daphnia?