The lobster soup is extremely delicious, you can cook seafood porridge, just with the lobster shell and steamed lobster left soup water. Crayfish in English refers to crayfish, in fact refers to the sea squid shrimp living in fresh water small close relatives, with a pair of large pliers, Lobster refers to the lobster, long, thick, prickly tentacles, sea squid shrimp tentacles are thin and short. New Zealand's Crayfish should belong to Rocklosbter, which New Zealanders have traditionally called Crayfish.