Pesticide dichlorvos found in frozen fish 02/20/2008 THE ASAHI SHIMBUN TAKAMATSU--The pesticide dichlorvos, which had contaminated gyoza dumplings imported from China, was detected in sliced frozen mackerel processed in an area of China that handles a large volume of farm produce. The fish was sold in Japan by Kouzai Bussan Co., based in Sanuki city, east of here, company officials said. They said 0.14 parts per million (ppm) of the organophosphorus pesticide was found in the product called Aburi Toro Shimesaba Suraisu, a package of 20 slices weighing about 200 grams. A Kagawa prefectural government official said, "The detected amount...