So I've had an endler (hybrid) tank going for a few months now, and they're breeding a lot as you'd expect. However, I have yet to see a single male fry, and there are probably at least 40 of them at the moment. I'm gonna give them to my LFS as soon as they're big enough, but I'll probably have to cull plenty still since there's not so much demand for females. These fry have come from 3 or 4 different mothers, several batches each. Any ideas why the male/female ratio would be so off? Is there anything I can do about it?