The UK native white-clawed crayfish (Austropotamobius pallipus) crayfish is under considerable pressure throughout the UK from the invasive American signal crayfish and a fungal pathogen (crayfish ...

Specimens have large eyes and claws, as well as smooth bodies. The species comes in two color forms: Blue form crayfish are a dark hue with orange joints and tails, while purple form crayfish are ...

Crayfish help clean the water by eating decaying plants and animals and are eaten in turn by more than 240 predators, including fish, birds, reptiles, amphibians and mammals, making them an important ...