We all know how difficult it is to identify the sex of these fish, so please post a picture in here and we'll try to help you (or at least give an educated guess!).
So if someone want two exchange two males for one female ...
I have 7 males now and one uncertain female.
I want to change this male (wild caught) and another huge male also wild caught (3,5 years). I can send you some pictures of the other male if you are interested.
I live in Gent, BELGIUM. The fishes can be send with a courier.