I've got two crested gecko's at home, the breeder told me they were about 12-15 weeks old (they come from different clutches and are a couple weeks apart). One of the two is growing very fast while the other is growing slow. I feed them by hand once every day or two and fresh food is always in a bowl. I just want to know if it's something I should worry about at this stage. The small one is still very active, responsive and seems healthy. I'll try to post pics later today, maybe it's the age dif. and the little one will speed up soon.