Inland Fisheries Ireland confirms large fish kill in tributary of Nenagh River

Tuesday, 17th July 2018: Inland Fisheries Ireland has confirmed that a large fill kill occurred on the Ollatrim River, a tributary of the Nenagh River, Co. Tipperary last week. Fisheries Officers attended the site at Ballinahemery Bridge near Ballymackey, Nenagh, Co. Tipperary on Monday, 9th July 2018 after receiving a report.

In total, 14,749 fish were estimated dead with dead fish observed over a five kilometre stretch of the river. The species affected included brown trout (1,400), lamprey (10,500), Stoneloach (805), Minnow (1,820), Salmon (70), Crayfish (70) and Stickleback (84).

Salmon and trout illed on the Ollatrim River.

Salmon and trout killed in the Ollatrim River

Inland Fisheries Ireland immediately commenced an investigation following the discovery of the fish mortality. Indications are that the fish kill occurred on Sunday (8th July) and locals have reported observing one or two dead fish on the Saturday evening. This is the largest fish kill of Lamprey, a protected species, in recent years and it is anticipated that recovery will take several years.

The investigation to identify the source of the fish kill is continuing this week. The cause appears to have been a chemical agent, possibly a herbicide or pesticide, which has now passed through the system.

Inland Fisheries Ireland is reminding the public and the farming community that if they are using spraying equipment to be aware that these herbicide and pesticide chemicals, even when diluted with water, are liable to be extremely toxic to all aquatic species and fish in particular. Any mixing must be done far from natural watercourses, especially in the current conditions when diluting waters are in short supply therefore increasing the toxicity of the chemical.

If mixing chemicals, washing or using spraying equipment for any purpose, particular care must be taken to ensure that the rinsing of equipment does not take place near any water body or watercourse including small drains. Any washing must be carried out in a manner that will not pollute the waters.

Inland Fisheries Ireland has a confidential hotline number to enable members of the public to report incidents by telephone 1890 34 74 24 or 1890 FISH 24. The phone line is designed to encourage the reporting of incidents of illegal fishing, water pollution and invasive species.

For further information about Inland Fisheries Ireland, visit www.fisheriesireland.ie .

ENDS

For Media Information:

Órla Sheils
Communications Manager
Inland Fisheries Ireland
E: orla.sheils@fisheriesireland.ie
T: 01 8848673

About Inland Fisheries Ireland

Inland Fisheries Ireland is a statutory body operating under the aegis of the Department of Communications, Climate Action and Environment (DCCAE) and was established under the Fisheries Act on 1st July 2010. Its principal function is the protection and conservation of the inland fisheries resource. Inland Fisheries Ireland promotes supports, facilitates and advises the Minister on the conservation, protection, management, development and improvement of inland fisheries, including sea angling. Inland Fisheries Ireland also develops policy and national strategies relating to inland fisheries and sea angling and advises the Minister on same.