"There are no fish coming from the regions that were hit, so no fish (being sold) are contaminated," said Rika Tatsuki of the National Federation of Fisheries Cooperative Associations. Japan tests sea-water radiation levels near damaged nuclear plant - AlertNet So the fish never move from area to area ,that is great news . I thought fish were more mobile and swam around in the sea . Silly me ! Well now I can relax knowing fish stay on the spot and never move from area to area .