River Loddon fish bypass opens at Arborfield
A channel for fish has been created along a stretch of the River Loddon in Berkshire to help them reach their spawning grounds upstream.
The £400,000 project bypasses weirs at Arborfield that hindered migration.
The 20km (12.4 mile) passage from the River Thames towards Basingstoke will benefit fish including sea trout, the protected eel and barbel.
Environment Minister Richard Benyon said the project meant the habitat could "flourish".
Enhanced fish spawning and nursery grounds for juvenile fish have also been created and a hectare of nationally important wetland habitats has been restored, benefiting wildlife including otters, kingfishers and dragonflies.
The project has been jointly funded by the Environment Agency, Thames Water and other partners.