Aren’t the fish deaths known to be related to recent earthquake activity?

This is the best summary I could come up with:

Japanese officials have junked reports that linked the deaths of tons of fishes along the shoreline in Hokkaido with the release of treated water from the Fukushima Daiichi nuclear power plant.

Around 1,200 tons of dead sardines and mackerels washed ashore and crowded about a kilometre-long stretch of the coastline in Hakodate city last week, leaving marine experts baffled.

While no official statement has been shared by Tokyo, a report in the British newspaper Daily Mail blamed the fish deaths in the northern prefecture on the water discharged from the decommissioned Fukushima nuclear plant.

The fishes found on the beach were likely a part of a school migrating towards south at this time of the year, the station said, reported Japanese newspaper Asahi Shimbun.

Photos of the incident showed thousands of tons of sardines and some mackerels on the shore, creating a sliver blanket along a stretch of beach about a kilometre (0.6 mile) long.

The Fumio Kishida administration said it needed to discharge the water as part of a key step of its critical process of decommissioning the Fukushima Daiichi plant, including the removal of molten fuel.

The original article contains 392 words, the summary contains 188 words. Saved 52%. I’m a bot and I’m open source!

The independent.co.uk with a reference to the daily mail. Credibility ensues

And well they should, it's ludicrous to think that there is any connection.

The worst part is, the more that is done to debunk the Daily Fail’s stupidity, the more traction it will gain. Should the fish kill be investigated? Absolutely. But, jumping to conclusions like they did is incredibly irresponsible. But, it’s also about what one expects from a tabloid.