The navigational weir at Diglis on the River Severn, built in the 1840s, with the new fish pass on the far bank. All photographs: Alexander Turner When four navigational weirs were built on the Severn ...

Twaite shad is a type of herring that migrates from the sea into freshwater to spawn each year For the first time in 180 years an endangered and rare fish has reached an ancient spawning ground. DNA ...

Return of one of one of Britain’s rarest fish confirmed after DNA found in water samples above fish passes For nearly two centuries, one of Britain’s rarest fish has been shut out of its spawning ...

Just 3 per cent of rivers in the UK flow unobstructed today, according to a European Union project. Centuries of industrialisation have reshaped these waterways and artificial structures such as weirs ...

Twaite shad is a type of herring that migrates from the sea into freshwater to spawn each year The return of an endangered fish to its spawning grounds on the River Severn will be celebrated at an ...

BRITAIN’S rarest fish is using a “bypass” to return to waters where its ancestors were often seen more than 180 years ago. Green campaigners are celebrating after the Twaite shad was filmed swimming ...

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The return of an endangered fish to its spawning grounds on the River Severn will be celebrated at an underwater viewing gallery. The Canal and River Trust's Unlocking the Severn project has seen four ...