Peter, looking back at your last egg picture, it does appear that maybe they weren't fertile to begin with. They look very similar to my first batch of Heroina eggs after two days, which were laid by two females. They had a similar white, almost puffy/spongy look. So here's hoping it's just an inexperienced/young male and that he gets it right soon. The good news is that they've spawned once, and they'll probably be inclined to continue now that they've started. *fingers crossed*