Summerhill Glen has been restocked with trout after a large number were killed by pollution last year.
The Department of Environment, Food & Agriculture says the glen has been resupplied with male and female brown trout - in the hopes of repopulating the 140 lost.
It comes following a 'detergent-based pollutant' killed most of the fish in the upper stream of the glen last September.
The department is reminding people to be vigilant - adding the likes of detergent, oils, pesticides and concrete washings are lethal to marine life.
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