­A ‘murasoi’ fish, similar to a rockfish, was caught at a port inside the plant, according to AFP. Plant owner Tokyo Electric Power Co. (TEPCO) indicated that the amount of cesium measured 254,000 becquerels per kilogram – 2,540 times Japan's legal limit for radiation in seafood.

In October, TEPCO admitted that radiation leaks at the plant had not fully stopped.

In 2011, after a March earthquake and tsunami devastated the region, Japan barred beef, vegetables, milk, seafood and mushrooms grown near the affected area from both domestic markets and exports over safety concerns.