SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                    FORM N-8A


                          NOTIFICATION OF REGISTRATION
                      FILED PURSUANT TO SECTION 8(a) OF THE
                         INVESTMENT COMPANY ACT OF 1940

         The undersigned investment company hereby notifies the Securities and
Exchange Commission that it registers under and pursuant to the provisions of
Section 8(a) of the Investment Company Act of 1940 and in connection with such
notification of registration submits the following information:

 Name:

         FIRST TRUST/FIDAC MORTGAGE INCOME FUND

 Address of Principal Business Office (No. & Street, City, State, Zip Code):

         1001 Warrenville Road, Suite 300, Lisle, Illinois  60532

 Telephone Number (including area code):

         (630) 241-4141

 Name and Address of agent for service of process:

         W. Scott Jardine
         First Trust Portfolios L.P.
         1001 Warrenville Road, Suite 300
         Lisle, Illinois  60532

 Check appropriate box:

         Registrant is filing a Registration Statement pursuant to Section 8(b)
         of the Investment Company Act of 1940 concurrently with the filing of
         Form N-8A:
         Yes [X]    No [ ]


                                -----------------







Pursuant to the requirements of the Investment Company Act of 1940, the
registrant has caused this notification of registration to be duly signed on its
behalf in the City of Lisle and State of Illinois on the 11th day of March 2005.


                               FIRST TRUST/FIDAC MORTGAGE INCOME FUND
                               (Name of Registrant)

                               By: /s/ James A. Bowen
                                   ------------------------------------------
                                   James A. Bowen, President, Chairman of the
                                   Board and Trustee



Attest: /s/ W. Scott Jardine 
        ----------------------------
        W. Scott Jardine
        Secretary