White clawed crayfish (Austropotamobius pallipes) underwater on riverbed, River Leith, Cumbria, England, UK. File photograph

Large numbers of dead freshwater crayfish have been reported in the River Barrow from Carlow to Graiguenamanagh, Co Kilkenny, in recent days. The ou(...)

The white-clawed crayfish is a globally threatened species and Ireland holds one of the largest surviving populations. Photograph: Ragnar Schmuck

Water users are being urged to take extensive precautions to stop the spread of a highly infectious Crayfish Plague after confirmation of an outbreak (...)

A mature male pink salmon captured in spawning condition in the River Erriff, Co Mayo.

An increase over recent weeks in the presence of Pacific pink salmon, a non-native species, in prime Irish rivers is a cause of growing concern for In(...)

A previous fish kill on the Tolka. People have been urged to take care with what they put into the sewage network. Photograph: Alan Betson

Inland Fisheries Ireland (IFI) has said it believes more than 500 fish were killed following a sewage overflow in Dublin’s River Tolka, caused by a di(...)

Harry O’Toole, Jnr, after a fine day’s fishing on  Lough Corrib with his father

The Minister for the Marine, Michael Creed, has received a report from the independent Aquaculture Licensing Review Group which examines the process o(...)

Map showing the course of the Vartry River from the reservoir, through the Devil’s Glen, Ashford, New Rath Bridge and into the Irish Sea. Photograph: Peter Murtagh

Irish Water’s plans to build a new water treatment plant at the Vartry Reservoir in Co Wicklow did not contain enough information, including an enviro(...)

The treatment plant upgrade is geared to increase output by 10 to 15 million litres of water per day. Photograph: The Irish Times

Unless a water treatment plant linked to the Vartry Reservoir in Roundwood, Co Wicklow, is upgraded, Irish Water would eventually have to restrict wat(...)

The Vartry water treatment plant at Roundwood, Co Wicklow. Photograph: Cyril Byrne/The Irish Times

An Bord Pleanála has decided to hold a public hearing on Irish Water’s plans for a €200 million upgrade of the Vartry reservoir, which supplies more t(...)

Gary Coughlan, right, being presented with the Lough Conn Trophy by Wicklow Anglers’ president Stuart McGrane

The board of Inland Fisheries Ireland (IFI) has welcomed a new study in the international journal Aquaculture Environment Interactions which utilised (...)

If the Irish white-clawed crayfish population is killed off by the plague, the North American species of crayfish may take its place and establish in Ireland. Photograph: Getty Images

The outbreak of crayfish plague in the River Suir at Clonmel, Co Tipperary is “extremely concerning” for the future of the species in Ireland, environ(...)

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