The RSPCA says it is trawling through CCTV.
Consumer group Which? has called the sale of jack mackerel, a cheaper, less nutritious species of fish, an example of "skimpflation".
A rare but powerful combination of an immense Pacific Ocean heatwave and a "super El Niño" will have profound effects on US weather this autumn. Here are five changes to expect.
Environment Agency officers believe a recent algal bloom has caused a drop in oxygen in the water.
The foam was left-over "run-off" from the foam firefighters used to tackle a large blaze on Sunday.
The No Such Thing As A Fish team discuss big fish, big pencils and a big coincidence.
Volunteers at East Blatchington Pond in Seaford say water levels are at their lowest in 50 years.
The Department of Environment said 5km of the Kilkeel River in the Mournes area was impacted.
More than 3,000 dead fish have been recovered from the river so far.
