Chinese Mitten Crab
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Invasion warning on Scotland's rivers

Scientists fear that an alien crab found in the River Clyde could have a devastating impact on salmon and trout fishing across Scotland's river network.

The remains of the Chinese Mitten Crab, also known as "hairy crab", were discovered in the River Clyde in June.

Experts say the crabs will eat fish eggs if they spread to areas where trout and salmon spawn.

BBC Scotland's Cameron Buttle reports.