Inland Fisheries Ireland (IFI) is investigating the death of approximately 850 wild Atlantic salmon in the lower Ballisodare River in Co. Sligo, Ireland. The cause of the mortalities is not yet known, with the investigation involving collaboration with the Marine Institute Fish Health Unit and veterinarians from the Department of Agriculture, Food and Marine. IFI is also performing a full environmental analysis of the catchment and urging the public to report any instances of fish kills, water pollution, habitat destruction, or illegal fishing. So far, only adult salmon deaths have been recorded and no other fish species are affected.