Definition & Meaning of "tuna fish"

What is a "tuna fish"?

A tuna fish is a large and fast-swimming marine fish found in warm and temperate waters around the world. It belongs to the mackerel family and is highly valued for its meat, which is rich in protein and omega-3 fatty acids. Tuna fish can grow to impressive sizes, with some species reaching lengths of over six feet and weighing several hundred pounds. They are known for their remarkable speed and endurance, enabling them to migrate long distances in search of food and suitable breeding grounds. Tuna are powerful predators, feeding on smaller fish, squid, and crustaceans. They are commercially important and widely sought after for both recreational and commercial fishing.