According to the query of aquaculture network, the weight of an adult king crab is between 1.5 and 3.5 kg, of which more than 3 kg is a big head, 2-3 kg is a normal size, and less than 1.5 kg is a small individual.

King crabs, also known as stone crabs or rock crabs, that is, crustaceans of Stone Crabs, are not real crabs, and they are mainly distributed in cold seas. Named after its huge size, it is known as the "king of crabs".