[Pavel Chaloupka]

that really looks like eggs. I have not tried to watch Paros eggs under the microscope yet. The only single fact I hate about all the labyrinth fish is exactly this. The eggs are white from the start and you can not see trough it. With most eggs of other species, we could tell without any problems if they are fertilized. But from what I see on the pics, I am unable to tell if the thick layer around the egg is just a chorion and not enough light or if it is perivitelline space, but you should be able to see if there are some blastomers and space filled with perivitelline fluid, more space around and close to blastomers first. I would expect the fluid to be clear, never seen it look otherwise. Could you check after couple hours how they look again? That could be very interesting for your work and for us too. We should be able to gather some data on the egg developement in order to check if things are going right. I agree with Peter, even with no males in the tank, females that have good times and produce plenty of eggs may relase those on their own, I have been told the same with Bettas couple times already and other fish too.