Signal crayfish (Pacifastacus leniusculus) - May 2021

Freshwater crustaceans at Wraysbury.
This is the Signal crayfish (Pacifastacus leniusculus).

This is the first time I've tried to photograph this species. I hadn't realised what a big brute this invasive creature is compared to our smaller native one. They are bigger, can outcompete and also spread disease to the native ones.

It was a bit tough going getting a clean shot in the silty mud of Wraysbury lake.

Olympus OMD-EM10 + Panasonic 12-32mm zoom @32mm