Roe refers to the eggs of fish and certain marine animals, often considered a delicacy in various cuisines. It can come from different species, including salmon, sturgeon, and trout. Roe is typically rich in nutrients, including omega-3 fatty acids, and is used in dishes like sushi and caviar. Caviar is a specific type of roe that comes from sturgeon and is highly prized for its flavor and texture. Roe can be prepared in various ways, such as being salted or served fresh. It is often enjoyed as a topping or ingredient in gourmet dishes around the world.