TOKYO, Sept 22 - Japan's new finance minister, Sadakazu Tanigaki, said on Monday that foreign exchange rates should reflect economic fundamentals. "Volatility in the market is not desirable, and there needs to be stability," he told reporters at a news conference following his appointment to replace Masajuro Shiokawa. Tanigaki said earlier he would not change Japan's foreign exchange policy, adding that currencies should be stable and reflect economic fundamentals. Earlier in the day, the yen jumped more than two percent against the dollar from late Friday levels amid speculation that Japan was finding it more difficult to continue its heavy yen-selling intervention after a Group of Seven statement over the weekend calling for more flexible exchange rates.//