Helene, I suggest that we should put such nice photos and/or photo series additionally at the bottom of the according species page.
In this case the colour difference between male and female is striking. Often (but mostly in normal colouration only, here we have the breeding colouration) the colour difference in pahuensis is very small indeed. I remember fish of this species that were rather difficult to sex (as more often it can be the case with P. paludicola; that could very difficult indeed with P. p. Paka or Wakaf Tapei. In Stefanie’s pictures it is nicely to be seen that even in pahuensis there could be a marked sex difference in a courtship atmosphere.