A blue-form adult female dusty crayfish (Figure a). A purple-form adult male (Figure b). CREDIT: Jiří Patoka. Dusty crayfish generally have smooth bodies, large eyes, and claws. They also have ...

Though crayfish—also called crawdads or crawfish ... omnivorous and gonochorist,” meaning it has distinct male and female individuals, Jiří Patoka, a zoologist at the Czech University ...