Could I put the biological father on child support if he isn't on birth certificate and another man who am with signed birth certificate

  Under Florida law, a party's name as father on a birth certificate of an unmarried couple is not necessarily dispositive of paternity.  However, since he signed the birth certificate there is a period of time that, once lapsed, creates a presumption that he has  acknowledged paternity.  As such, he (and you ) may have to disestablish paternity in order to pursue child support against the biological father.  I am sure he would also require a DNA test of the putative father.  If you are planning to go through Child Support Enforcement, I would ask them if they can assist with that.  If not, you will have to do the disestablishment on your own and before you attempt to get child support.   Best of luck, Cindy S. Vova Law Offices of Cindy S. Vova, P.A. Broward/Boca Raton 954-316-3496/561-962-2785