male molly will only breed with same female??

[zoea_warnick]

i have 5 mollies 4 female and 1 male. my male molly is a horndog and is constantly going after the same female but all the other ones havent been touched once. ones super preggo and the others cant get laid to save their life what am i doing wrong? ive even separated the pregnant molly from the rest but the male still wont mate with the others.

 

[Kiara1125]

Mabye the other females aren't sexually mature yet?? My male platy does that too, but he chases my non-prego female. He got my other female prego, but he only chases the female that's non-prego.

 

[ValRasbora]

How big are they and what colors?
I'm in doubt of them being not sexually mature. Mollies mature at about a month of age.
Sometimes size difference might be a barrier. If they are different colors, then they could possibly be different species.