Blue Australian Crawfish (Cherax quadricarinatus):

Known by several common names, including Australian red claw crayfish, redclaw, tropical blue crayfish, and freshwater BlueClaws crayfish is an Australian freshwater crayfish.

Cherax quadricarinatus may reach a total length of about 250 mm (9.8 inches) and weigh up to 600 grams.

May also be seen on sale as the Blue Lobster.

Redclaw Crayfish is considered a delicacy, compared favorably with other commonly eaten marine crustaceans. The meat is arguably more healthy than traditional seafood, however, since it is low in fat, cholesterol, and salt.