They are so adorable! I have about 30 kribs that are now about 4 months old and they also are growing at different rates. I was thinking maybe the females were smaller although I am not sure about your cute little gouramis! Nice work!
So the there are still nearly 30 babies, and the size/maturity disparity is striking. I've removed the three largest from the breeding tank and put them in my large tank, which also holds a couple angel fish, their mom, and an unrelated male (the only survivor from my second breeding attempt back in January or February), as well as some otos. Anyway the pictures are as follows:
1) The breeding tank. The still picture does not do it justice, as the tank is alive with action.
2) Close-up of one of the smaller babies still in the breeding tank.
3) Picture of the larger tank. Note the two large babies in the back.
4) Two full grown gouramis (including mom on top) and two babies in the back left.
5) Close up shot of the mom (bottom) and the unrelated male (survivior of my previous breeding attempt this winter).