July 17 (Reuters) - Fitch Ratings on Wednesday revised to "negative" from "stable" the outlook for Australia's No.2 lender Westpac Banking Corporation WBC.AX and its peer Australia and New Zealand Banking Group Ltd ANZ.AX .
The change in the lenders' Long-Term Issuer Default Rating resulted from greater capital requirements sought by the country's financial regulator, Fitch said in a statement.
The rating agency affirmed both the banks' ratings at 'AA-'.