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Crayfish Regulations (PDF)
According to NC General Statue and NCWRC Regulation, it is unlawful to stock any fish (including shellfish and crustaceans) into public waters without a
WRC permit. It is also unlawful to transport, purchase, possess, or sell any live individuals of virile crayfish (Orconectes (Gremicambarus) virilis), rusty crayfish (Orconectes (Procericambarus) rusticus), Australian “red claw” crayfish (Cherax quadricarinatus) or other species of “giant” crayfish species.
The following illustration is reproduced from:
Cooper, J.E. 2006. A new species of crayfish of the genus Cambarus Erichson, 1846 (Decapoda:Cambaridae) from the eastern Blue Ridge foothills and western Piedmont Plateau of North Carolina. Proceedings of the Biological Society of Washington.119(1):67-80.

Fig. 1. Cambarus johni. All fromholotypic male, form I (NCSM 24035), except B, C from morphotypic male, form II (NCSM24034), and J, fromallotypic female (NCSM 7544): A, lateral aspect of carapace; B, E, mesial aspect of gonopod (first pleopod);C, F, lateral aspect of gonopod; D, dorsal aspect of carapace; G, caudal aspect of in situ gonopods; H,epistome and renal apertures; I, coxa of right fourth pereopod; J, annulus ventralis and postannularsclerite; K, antennal scale; L, dorsal aspect of distal podomeres of right cheliped. Scaleline 5 2 mm
Credit NCWRC for all photos.