Anglers warned of demon shrimp in Cumbrian rivers

The trout fishing season is underway and scientists are warning about a new threat facing Cumbrian rivers.

Wildlife experts are worried that non-native shrimp from the Black Sea could invade waters here and wipe out native species.

Katie Hunter reports.

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Cumbrian rivers face new threat from demon shrimp

Anglers are being warned about demon shrimp in Cumbrian rivers.