date:Aug 11, 2012
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.
The eggs come from adults caught from West Yorkshires River Calder back in March 2012, and the young fish, know