Mussels kill off UK native species

They may look harmless - but these shrimps and mussels from abroad could be very dangerous for our native fish species in the UK.

Scientists are warning about the army of invasive shrimps and mussels that originally come from the Caspian and Black seas in Turkey and Ukraine.

They have been found in Britain's rivers and streams for the first time in the past few weeks .

One particular small species, the Quagga mussel - that's only as big as your thumbnail, can produce one millions eggs each year.

Dr David Aldridge, Cambridge University said: "I think we are at a tipping point. Now the quagga mussel has just arrived, we are about to have a big meltdown."

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