Pilchards, also known as sardines, are small, oily fish that belong to the herring family. They are found in the Mediterranean Sea and the Atlantic Ocean, and are a popular food source in many countries. Pilchards are usually canned and eaten as a snack or used in salads and other dishes. They are high in protein and omega-3 fatty acids, making them a healthy choice for those looking to add more seafood to their diet.