Darth, I am fully aware that the bigger the number of fry the greater phenotype diversity I could get. I don't cull by size, by the way. I am culling the dying or oodly-strange swimming ones. Everytime I cull one I recognize that this may have been the one with the perfect colors or perfect fins, etc. But when you start with a nest size of about 300, it's just not practical to keep all of them. Not to mention, if you cull early on it's much easier than it is to have to put down a 1" baby betta....or find someone that is willing to raise it.
At this time I am down to about 70 or so. All the fry seem very healthy and are feeding like crazy. I just passed the three week mark yesterday. Hard to get good macro pics of them since they are more aware of me and dart away from the glass when I come take a peek at them. I will say that this is the first batch that I have raised on microworms alone so far and it's been wonderful (thanks to Vier). While BBS were great too for my previous spawns, I hated that mess with a passion.