Businesses in the fish category typically sell fish and seafood for customers to prepare at home. This may include whole fish, fillets, shellfish and other seafood, offered fresh, chilled or frozen. Staff can explain the types of fish available, their flavour and texture, and how they are best cooked. Many fishmongers clean, scale, skin or fillet fish to order, and may portion it to suit a particular recipe or serving size. Depending on the business, customers may also find smoked, cured, marinated or otherwise prepared fish, as well as seafood such as prawns, mussels, crab and squid. Some shops stock sauces, seasonings and accompaniments, or prepare items such as fishcakes and seafood salads. Fish may be sourced from different fisheries or suppliers, so availability can vary with season, catch and delivery.