Think it was an American Signal crayfish it seemed much bigger than the crayfish I remember from 40 years ago. It also had white on its claws.
The Avenue Washlands sighting reported by Paul Siddall
American signal crayfish
![American signal crayfish by Paul Siddall](/sites/default/files/styles/scaled_default/public/2018-10/American%20signal%20crayfish%20by%20Paul%20Siddall%203.jpg?itok=iA2PQVp0)
American signal crayfish by Paul Siddall
![American signal crayfish by Paul Siddall](/sites/default/files/styles/scaled_default/public/2018-10/American%20Signal%20crayfish%20by%20Paul%20Siddall%202.jpg?itok=VawTsTXq)
American signal crayfish by Paul Siddall
![American signal crayfish by Paul Siddall](/sites/default/files/styles/scaled_default/public/2018-10/American%20Signal%20crayfish%20by%20Paul%20Siddall%201.jpg?itok=KE7Vvbcz)
American signal crayfish by Paul Siddall