Certification Pursuant to Section 906 of the Sarbanes-Oxley Act I, Philip R. McLoughlin, Chairman of The Zweig Fund, Inc. (the "Fund"), certify that: 1. The Form N-CSR of the Fund (the "Report") fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and 2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Fund. Date: September 5, 2003 /S/ PHILIP R. MCLOUGHLIN ---------------------- ------------------------------------ Philip R. McLoughlin, Chairman (principal executive officer) I, Nancy G. Curtiss, Treasurer of The Zweig Fund, Inc. (the "Fund"), certify that: 1. The Form N-CSR of the Fund (the "Report") fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and 2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Fund. Date: September 5, 2003 /S/ NANCY G. CURTISS ---------------------- ------------------------------------ Nancy G. Curtiss, Treasurer (principal financial officer)