I dont recommend moving the fry til they are about 2 months old. You can move them earlier but expect some mortality, I recently had to move some at a month and I lost about 30% of them. If you are talking about selling them then i suggest 3cms minimum. the reason for the difference is that if you are going from one of your tanks to another then the water will be similar. when you sell them you have no idea what the water will be like and any big difference will shock the fry.
you can tell dark or albino almost from the egg. but if the fry are out of the cave then you can tell. if they all look dart, then they are all common.
sexing takes longer. I can sex them at about 5 months with about 60-70% accuracy, but for most people its when they mature at about 9-10 months.
They eat the same as the adults. but strear clear of excess protein as that will cause bloat. throw a bit of cucumber in there for them and they will be fine
Congrads on the spawn!!! good luck with them
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