INLAND FISHERIES IRELAND (IFI) is currently investigating a “locally significant fish kill” impacting several species on the River Glyde in the area of Tallanstown Co Louth.

The fish species found dead includes adult and juvenile eel, brown trout, pike, coarse fish and Atlantic salmon, which are currently near-threatened or endangered in Ireland.

IFI Fisheries Environmental Officers have been on site since Tuesday evening to investigate the incident and samples taken at the river have been sent for laboratory analysis.

Ronan Matson, Director of the IFI’s Easter River Basin District, estimated that over 20,000 fish have died.

Speaking to RTÉ News at One, he said: “The cause is believed to be an agriculture discharge upstream from Tallanstown.

“We’ve taken our water samples and sent them on to laboratories for testing. The idea now is we’ll wait for those results to get back and confirm the cause,” he added.

He said the pollutant is no longer believed to be entering the river and will wash out “relatively quickly”.

He said it could save several years for the fish to come back to the area, but said that most fish spawning was taking place upstream from the source of pollution and shouldn’t be impacted.

Monitoring and assessment of the impact will continue to be undertaken by IFI staff.

The IFI is urging the public to report instances of any fish kills to its confidential 24/7 number, 0818 34 74 24.