Female platy not getting pregnant

Hello everyone. I have 4 platies, 1 who is male and 3 who are female. My male mates with my three females but I have never seen any of my females get pregnant. My tank is 20 gallons and I have 3 guppies, 6 neon tetras, and my 4 platies in the tank. Any help would be much appreciated.

 

Could a male platy be infertile?

 

How big are they?

Do they look fat, medium, or skinny?

You are 100% sure the male is a platy? (Sorry, hate to ask, some people have trouble telling the difference between mollies and platies.)

 

I am pretty sure that they are platies and they are the right gender. They are all about 2.5 inches long, not including the tail. Any ideas?

 

How long have you had the platies? Sometimes it takes a bit.
It's possible that the male is infertile. It's also possible that they're giving birth and the fry are being eaten. What temperature are you keeping them at?

 

I am sort of in the same boat. I have 3 swords 2F/1M. Other then once I never see the male try and do anything with the females any more.. Unfortunatly my Male platy jumped out... What can I do to help them?

 

I would suggest starting a thread, Ziabis, so you can give your information and people can ask questions specific to your situation. That way, hopefully you can resolve your issue and we can give you some ideas.

Start a new thread and give us all the information you can: tank size, inhabitants, temperature, setup, behavior and things like that.

 

How long have you had the platies? Sometimes it takes a bit.
It's possible that the male is infertile. It's also possible that they're giving birth and the fry are being eaten. What temperature are you keeping them at?

The temperature is about 26 degrees (76 degrees Fahrenheit)
Now one of my platies looks like it ate a marble! Do you think that it is pregnant?