Congrats!! If only you were closer...i'd happily take some!
Our little guys are all at different stages. The teeny tiny little one you gave us has doubled in size and the biggest is nearly fully grown. The others are all in between that. I'd assume a few of them are the same age, so they're a bit random in size, but they grow so fast! We have them growing out in a tank with only 5 little platy fry so I think it comes down to space. They were living with guppies and little gbas, but now they're gone they've gone crazy!
I can't believe how much they eat too! Haha.