Grayling Boost for River Colne
Environment Agency staff will today (Friday 10 August) be restocking the River Colne with 4,000 grayling as part of efforts to return it to its former status as one of the best grayling rivers in the country.
Fish stocks in the Huddersfield river were hit two years ago following a pollution incident, which damaged fish populations and to help with the recovery of the river fisheries officers will be stocking it with grayling at several locations from below Marsden down to Milnsridge.
Peter Mischenko, fisheries technical officer at the Environment Agency, said:
“Grayling are an important species in a watercourse. They require water with a high oxygen content, and so their presence is usually a sign of good water quality.
Anglers have come from as far afield as Holland to fish for them in the River Colne. This stocking should help to boost numbers in the river as part of an exercise that was started the year after the pollution incident.”
The young grayling are nearly five months old and have been bred and grown at the Environment Agency's fish farm at Calverton in Nottinghamshire from eggs taken from adults caught from West Yorkshire’s River Calder back in March 2012. The fry have been grown in a specially designed system that ensures they can thrive in the River Colne environment.
The fry will continue to grow in the river and some of them will begin to spawn in the spring of 2014. It is hoped that by stocking these young fish over the next few years, the population of grayling in the river will return to healthy numbers.
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