Alligator gar (Atractosteus spatula) gets its name because its head resembles a crocodile. They are found mainly in southern North America. It is a kind of ancient fish, has existed on the earth for more than 100 million years, can live generally 26 to 50 years, the highest record is 75 years. Alligator gar is a carnivorous fish and is listed as one of the world’s top 10 fierce freshwater fish because of its ability to attack humans.