How do you sex Fantails?

Question
I have recently bought a starter tank and have two Fantails in it. I have not owned fish before and was wondering how you can tell what sex the Fantails are as i am interested in breeding them. Hope you can help!  

Answer
Hiya,
you really can't tell so you have to ask the fish store people to find out what sex they are.some fish breed fast and some are slow but when you get your babys you need to separate them with just there mom.After that you have to take out the mom and leave the babys in there for about seven to nine months.
 from:
      Andrew : )