Inland Fisheries Ireland (IFI) has confirmed investigations are underway into fish kills in Co. Cork and Co. Galway today (Friday, July 10).
IFI is also investigating a suspected pollution incident in the Deenagh River at Killarney, Co. Kerry.
IFI staff are investigating a fish kill at Curraghalicky Lake near Dunmanway, Co. Cork.
Several hundred juvenile bream have been recovered from the lake.
The agency said that it is now working with other government agencies in line with the new national interagency protocol for investigating significant fish kills.
“Relevant agencies have been notified including the Environmental Protection Agency, Cork County Council, the Marine Institute, and the River Basin Management Service," it added.
In addition to this the IFI is also investigating a suspected pollution incident in the Ross River, Killavullen, Co. Cork, following a report of "heavy discolouration" in the river.
No dead fish have been reported and IFI was made aware of the issue through a call to its 24/7 confidential number.
Cork County Council has also been notified.
Separately the IFI has also confirmed it is investigating a fish kill in Co. Galway in which up to 120 fish have died.
It outlined that a suspected pollution incident occurred "on a tributary of the Dunkellin River in east Galway".
"Species of fish discovered dead include salmon, trout, perch, stone loach, stickleback, and lamprey," the IFI stated.
The agency said it is "actively probing the cause of this harmful event, and is now following a definite line of inquiry about a possible source of pollution".
IFI has notified other agencies about the incident including Galway County Council and the Environmental Protection Agency (EPA).
The agency said that it is also investigating a suspected pollution incident in the Deenagh River at Killarney, Co. Kerry.
No dead fish have been reported and Kerry County Council, the National Parks and Wildlife Service, and the Environmental Protection Agency are involved in the investigation.
IFI has appealed to the public to report issues of concern to its confidential 24/7 number: 0818 34 74 24.