Dead fish have been spotted at a pond in an Ipswich park after extreme weather left the water without any oxygen.
Stonelodge Park, in the Chantry area of Ipswich, has a wildlife pond surrounded by wildflowers and willow trees, but extreme heat and storms in recent weeks have left the fish in the water starved of oxygen.
The pond is now covered with a thick layer of duckweed, stopping any light reaching plants and creatures beneath the water's surface.
An Ipswich Borough Council spokesman said: "We are aware of the habitat problems at Stonelodge Park and we are trying to find an effective solution.
"This is happening in many parts of the country and is caused by a deterioration in oxygen levels when heavy rain follows hot dry spells."
The spokesman confirmed a number of fish have died as a result of the lack of oxygen in the water. A spokesman from the Environment Agency said: "Officers have visited Stonelodge Park in Ipswich after receiving reports of dead fish in the pond.
"Summer can see agency staff responding to many reports of fish in distress.
"Hot, sunny weather can reduce the dissolved oxygen on which fish depend. Low rainfall increases the risk, by reducing river flows and still water levels, like ponds and lakes. Small, still waters are particularly susceptible."
This pond is the latest body of water in Suffolk to be blighted by sudden drops in oxygen levels after a sluice in Kessingland was spotted with more than 1,000 dead fish in it.
The fish were first spotted on Sunday, July 28, by a dog walker from the town who said: "It's smelling and it's horrible.
"I want to warn people against going there. Keep dogs and children away."
A spokesman said the 1,000 fish affected were mainly roach and there was no obvious source of pollution causing the deaths.
They added that the situation was "unfortunate", but the agency would not be able to remove the dead fish "as our teams are responding to similar incidents across East Anglia, focusing resources on where we can save fish".
If people see dead fish or fish gasping for breath, call the Environment Agency on 0800 80 70 60.
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