I learned a lot of new facts from the thread “Territorial behaviour ….”
I move my question – connecting the newly learned aspects with my observations of my new paros – here, to keep it apart from the generally interesting facts in the other thread:
With regard to behaviour, my 4 “aliens” show both kinds of aggressive behaviour – the more “male” way, side-by-side, head down, colours (stripes and fins) turning very dark. And the more “female” way, chasing and nipping each other.
What seems more important to me – a deduction I make from my observations of the nagyi-pair – is the fact that I have seen no sexy eyes until now, in none of the fish. In the nagyi male I observed that males show sexy eyes very early when they are interested in a female – even if she is totally dismissive.
At present I think that Martin Hallmann is right and I have only females – because I believe that a male – even as small as the smallest of my fish – would have already shown sexy eyes in the presence of a female.
At least I believe that my fish belong to one sex only – even if it were all males, they wouldn’t show sexy eyes, either.
What do you think of my “theory”?