BBC News, North East and Kumbriya
Volunteers have taken out 173 LBS (78 kg) dead fish from a park pond after an increase in water temperature.
The residents saw hundreds of fish floating on the surface of the pond at Rosmere Park, Hartlepool.
The environment agency (EA) found no evidence of pollution, and said that the fish died due to the impact of increasing water temperature on the breaking oxygen in the water.
Labor MP Jonathan Brash said he was “really upset” to see the pictures of the dead fish and expected to find ways to prevent it from reworning.
EA tested with watercourse, but no evidence was found that it was polluted.
A spokesperson said that long -term dry weather caused a decline in oxygen in the water jointly with “stagnant water flow and increase in water temperature”, killing the fish.
Hartlepool Boro Councilor Quuwon Bailey-Flat said that three locals removed the dead fish from the pond and now committed to work voluntarily to help maintain it.
Mr. Brush met the council and environmental agency teams in the pond.
He said: “They are currently airing water and testing the quality of water to promote oxygen levels.
“The initial view is that recent hot weather reduced oxygen levels and increased ammonia – a dangerous mix for fish.
“The good news is that the pond still has a living fish population, and now we have gone to the recovery phase.”