Rivers and canals UK suffer from the invasion of the American crayfish. According to Kedem citing publication The Telegraph, it is unclear how they were put there. It is noted that the large American crayfish violate balanced ecosystem of British rivers. This can lead to the fact that smaller local crabs may disappear entirely.
Currently, the British agency for environmental protection has asked fishermen and anyone who can catch the American crayfish in large quantities. According to experts, it will not only save the ecosystem of the rivers, but will provide a delicious gourmet delicacy.
Add that license to catch crayfish free. It is issued on request by e-mail.