Shellfish are some of the best seafood, i love getting them fresh from fisheries
They are good! Whats your favourite kind of shellfish? 
I love oysters, scallops, and clams
Same, have you ever caught shellfish yourself?
Shellfish
Shellfish is a colloquial 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 are found in freshwater. In addition, a few species of land crabs are eaten, for example "Cardisoma guanhumi" in the Caribbean. Shellfish are among the most common food allergens.
Despite the name, "shellfish" are not actually fish, but are simply water-dwelling animals. Most
kaibashira" (貝柱) may be called scallops, it is actually the adductor muscle of any kind of shellfish, "e.g.", mussels, oysters, or clams. Dried scallop is known in Cantonese Chinese cuisine as "conpoy" (乾瑤柱, 乾貝, 干貝). Smoked scallops are sometimes served as appetizers or as an ingredient in the preparation of various dishes and appetizers.
Scallops have lent their name to the culinary term "scalloped", which originally referred to seafood creamed and served hot in the shell.