Over-zealous breeding is the reason behind dead carp in the Abbey Fields lake, say experts amid confusion over growing numbers of floating fish.
High numbers of large mature fish were seen floating near the shores of the lake over the weekend, along with bubbles rising to the surface.
I suppose if you are a fish then its as good a way to die as any other way I can think of,Cllr Richard Davies
Anger and speculation spread in the town as to the fate of the creatures in the no-fishing zone with many putting the problem down to low oxygen and high numbers of carp in the small space.
But Jon Holmes, green space development officer at Warwick District Council waded in to explain that the fish exert so much energy in the breeding season, they do not make it into the summer.
Explaining the annual puzzle, he said: “This time of year we get fish dying as it is the breeding season and the exertion can cause deaths to mature adults.
“It is unfortunate but, part of the fish life cycle.
“The fine bubble are predominantly generated by carp feeding on the bottom of the lake in the silt.
“I was at the fields with colleagues on Thursday daytime it was happening then, and does so every year which is nothing out of the unusual.
“We have been successful to date, with no fish killed in extreme high temperatures and we will continue to monitor the lake.”
Abbey district councillor, Richard Davies, who alerted the council to the problems following concerned calls, said the Environment Agency are also on site installing pumps to oxygenate the water and prevent further losses to the stock.
After discovering the reasons behind the loses he said at least the fish “died happy” in the natural breeding cycle.
“I suppose if you are a fish then its as good a way to die as any other way I can think of, at least they died happy,” he said.
“There is also an issue with the levels of oxygen which is adding to the problem.
“The Environment Agency are preparing to put pumps into to re oxygenate the water and hopefully prevent further losses to the fish stock.”
Fishery management students from across the district remove fish each year to manage the population and keep fish healthy and avoid unnecessary deaths.