Male Sailfin Mollies

[ksrowe8]

I recently purchase 2 male sailfin mollies. All is going well. I also have 2 male guppies. The four of them think they are a school. I was told by my local fish expert (aka local shop keeper who seems pretty knowledgeable) that a good school is normally an odd number.....so....I purchase another male sailfin molly. Problem is that the other 2 males seem to think he is a female and are trying to mate with him (quite funny). Sometime this seem to be almost aggressive. I worry that my new molly isn't fitting in. So my question is does anyone have this variety of fish and have you experienced the same problems? And as always thanks for you help!

[Coyote]

Why did your local expert suggest three molly males?
As what I've heard/read, male/female ratio in a livebearer tank should be 1:2 or 1:3.

I have three swordtail males and four females (maybe). The males always complete with each other for females. Whenever a male tries to mate with a female, the other two males join in and chase each other away from the female.
Anyway, it's better to keep more females than males since males are more aggressive.