Fishing companies in Asia and Norway may benefit from an increase in demand from Japan, where radiation being released by the crippled Fukushima No. 1 nuclear plant is showing up in the ocean and food supply.

Hong Kong's Pacific Andes International Holdings Ltd. and Norway's Marine Harvest ASA, Cermaq ASA and Salmar ASA may see higher demand for their fish to make up for the drop in Japan's seafood production.

Five kinds of radioactive material released by damaged fuel rods from the Fukushima plant were detected in the nearby sea, including iodine-131, cesium-134 and cobalt, according to operator Tokyo Electric Power Co.