how fast do the fry grow?

[dragoon459]

i'm new to this forum and have a question i've been wondering about forever!!!....how fast do rosy barb fry grow? The fry I have are about 1centimeter long, are being raised in a ten gallon tank and are about one month old. I need to know how old and how large the fry must be before I can move some of the barbs into the parents tank(10 gallons) and or give them away. (I'm planning on getting a much larger tank soon so i dont have to worry about overloading the tank with fish.)