A fish sandwich is a type of sandwich that features fish as the main ingredient, typically served between two slices of bread or in a bun. Common types of fish used include cod, haddock, and tilapia, which can be fried, grilled, or baked. Fish sandwiches are often accompanied by toppings such as lettuce, tomato, and tartar sauce, enhancing their flavor and texture. Fish sandwiches are popular in many regions, especially in coastal areas where fresh fish is readily available. They can be found in various restaurants, including fast-food chains and seafood eateries. Some variations may include spicy or blackened fish, catering to different taste preferences.