Canned tuna is a popular food product made from fish, specifically the tuna species. It is typically cooked and preserved in a can, making it convenient and long-lasting. Canned tuna is available in various forms, including chunk light, solid white, and skipjack, and can be packed in water, oil, or brine. This versatile ingredient is often used in salads, sandwiches, and casseroles. It is a good source of protein and contains essential nutrients like omega-3 fatty acids. Canned tuna is widely available in grocery stores and is a staple in many households due to its affordability and ease of preparation.