Here some new pics of my smallest zebs...
Both fish are a little over 6cm
This one believe to be male but i could be wrong:

This on i believe to be female.It has being trapped by the dominant male for two days some months ago but nothing happened:

Here is a pic with both fish:

i couldn't get some more clearer pics in order to be able to see the odontode growth but there is not developed in order to justify male for both fish.
thanks,
Jim