INADEQUATE oxygen levels and poor water quality have been ruled out as the reason for the death of dozens of fish at Portishead Lake Grounds. In response to residents' concerns about regularly seeing dead or dying fish at the beauty spot, North Somerset C

INADEQUATE oxygen levels and poor water quality have been ruled out as the reason for the death of dozens of fish at Portishead Lake Grounds.In response to residents' concerns about regularly seeing dead or dying fish at the beauty spot, North Somerset Council officers conducted tests to check the quality of the water in the lake and the water's oxygen levels.The tests revealed that both were within normal limits, despite five consecutive days of hot weather.A spokesman for North Somerset Council said that some fish are probably dying because the lake is shallow, which means the water heats up more readily.The high population of fish in the lake is also thought to be a contributory factor.