: Native to western North America, it is distinguished by a white or pale blue-green patch at the claw hinge. It can grow up to 16–20 cm and live for 20 years.
: Native to the Ohio River Basin, this aggressive species is easily identified by rusty-red spots on each side of its shell and black bands on its claw tips. Ecological Role and Impact american crayfish
: Native to the Gulf Coast and Mississippi River drainage, it is typically dark red with elongated claws and is widely farmed for food (crawfish boils). : Native to western North America, it is
While there are over 350 species of crayfish in North America, three are frequently discussed due to their ecological impact and wide distribution: : Native to western North America