That's awesome. Baby them!
The vast majority of Blue Dempseys that grow out are male. I've raised a few females though and a Blue x Blue pair are absolutely stunning. They pair in my profile pic were both breeders at early stages of their life but then "retired" together for another 4-5 years. They bonded very very well, were confident and dominant without being at all aggressive. They went through the motions of breeding, with the female turning pure black when spawning. The wigglers rarely last more than a few days and only became free swimming a couple of times. But still, they were a joy to watch.