My fry are almost a month old, and about 1/2" big.
You can already see their personalities and i can ID a few already due to a few distinct markings. It's cute to see them look at you through the glass and you can see their little fins and such. I still have about 50 fry left, and they are getting bold. They now spread out over the entire footprint of the tank and the parents only round them up at night to sleep