Inland Fisheries Ireland (IFI) is investigating a serious incident near Kinsale in Co Cork in which at least 2,000 fish have died.
The fish kill occurred on the Brownsmills stream in Co Cork and spread over a 4-5km stretch, flowing into the estuary at Kinsale.
Species of fish discovered dead include brown trout and eel. IFI says it first became aware of the issue on Wednesday (12 July) when a member of the public informed staff of seeing dead fish in the stream.
IFI have taken fish and water samples for analysis; Cork County Council Environmental Department are assisting with the investigation.
The State agency responsible for the protection, management and conservation of Ireland’s freshwater fish and habitats says it is not in a position to confirm the specific cause of the fish kill at this early stage, but investigations are continuing.