Schoolchildren who helped rear scores of baby trout have released the fish into rivers around Burnley.
Youngsters from six schools helped hatch the eggs in the classroom and nurtured the young fish over three months.
But now the pupils have set the fish free into the River Calder to help boost indigenous populations under the “Trout in the Classroom” project.
Dozens of children from St James Park Hill, Ightenhill, St Peter’s, Stoneyholme, Springfield and Holy Trinity CE Primary were part of the project run by the Ribble Rivers Trust.
It was aimed at teaching children about the life cycle of trout and the importance of keeping river habitats clean for wildlife in the town.
The schools have also taken part in workshops designed to encourage the children to express their experiences of the river though stories and poems, and through music by composing and performing with instruments.
It is part of the £1m. Urban River Enhancement Scheme to transform rivers in the town supported by the Heritage Lottery Fund.
Neil Ashworth, education and projects officer for the URES, said: Children are the future guardians of the rivers and it is vital to the success of the scheme that they become involved.
“Local people are essential to the success of the URES and we are working to encourage and equip our communities with the skills, experience and confidence to take ownership and pride in our rivers. ”