I think there are some good explanations here as to what could have happened, – and perhaps it is true that theres no male in there, – and it happened for some other reason.
But just one thought which I had is also, that if there were indeed another male in the tank, – the second male would likely be a lot more subdued because the other one was dominant.
I do not always find linkei to be that easy. As a matter of fact, just 5 minuttes ago I checked a tank in which I had one grown male with a grown up fry which I was certain was a female. Well, its not :whistle: … I just realized that a moment ago, its a young male
Well 🙂 .. but it is probably two females in your tank as you say 😉
Your study of the eggs are amazing, very interesting