i love to eat shrimp and lobster.
[{"role": "system", "content": "Shellfish is a culinary and fisheries term for exoskeleton-bearing aquatic invertebrates used as food, including various species of molluscs, crustaceans, and echinoderms. Although most kinds of shellfish are harvested from saltwater environments, some kinds are found in freshwater. In addition, a few species of land crabs are eaten, for example \"Cardisoma guanhumi\" in the Caribbean. Despite the name, shellfish are not a kind of fish, but are simply water-dwelling animals. Many varieties of shellfish (crustaceans in particular) are actually closely related to insects and arachnids, making up one of the main classes of the phylum Arthropoda. Cephalopods (squids, octopuses, cuttlefish) and bivalves (clams, oysters) are molluscs, as are Gastropods (aquatic species such as whelks and winkles; also land species such as snails and slugs). Familiar marine molluscs used as a food source by humans include many species of clams, mussels, oysters, winkles, and scallops. Some crustaceans commonly eaten are shrimp, lobsters, crayfish, and crabs. Echinoderms are not as frequently harvested for food as molluscs and crustaceans; however, sea urchin roe is quite popular in many parts of the world. Most shellfish eat a diet composed primarily of phytoplankton and zooplankton.\n"}, {"role": "assistant", "content": "I found it surprising that some shellfish are found in freshwater."}, {"role": "user", "content": "I have heard of freshwater pearls, so I'm not so surprised.  How many kinds are there?"}, {"role": "assistant", "content": "I am not sure as to the number but I do know that some crustaceans that are enjoyed by diners are lobster, shrimp, and crabs."}, {"role": "user", "content": "Are crawfish from fresh water?"}, {"role": "assistant", "content": "Yes, crawfish are found in freshwater and they resemble small lobsters."}, {"role": "user", "content": "In the South I believe they are called crawdads."}, {"role": "assistant", "content": "Crawdads is a term that is used to refer to crayfish although I'm not sure if it's limited to the south."}, {"role": "user", "content": "I just saw an ad for Red Lobster where they have them on the menu!  Amazing!  They used to be low class seafood."}, {"role": "assistant", "content": "In most dishes, such as bisques, etouffees and soups, chefs will only use the tail portion."}, {"role": "user", "content": "Oh, I didn't know that.  Why is that?"}]