FlintyDoughy

So I bought two female kenyi and one male kenyi in January. About a month ago, one of the females turned yellow (yellow spot on the tail) and the yellow one turned purple (but has the yellow spot on his tail fin). Now the new yellow one has taken over the tank and chases the now purple fish around and "vibrates" in front of the new purple one and then chases him/her?? around the tank.

So can someone tell me what is going on here? Is the new purple one still male, or is he female? And if he is still a male, is that why he gets chased all the time? Every other fish get along fine without issue.

Angela_96

Do you have pictures of them?
The females are blue with black bars like the on in my profile picture. The yellow kenyi are the males.
They could be mating?