Genus Esox refers to a group of predatory fish commonly found in freshwater bodies, and the most well-known species is Esox lucius, commonly referred to as the Northern Pike. This genus also includes other species such as Esox americanus, Esox niger, and Esox masquinongy. While not a commonly used term, the genus Esox can also be referred to as the Pike genus or simply Pikes. Additionally, the Northern Pike specifically can also be called Jackfish, Snake, or Slough Shark in some areas. Regardless of the synonym used, these fish are known for their voracious appetites and sharp teeth, making them a popular game fish among anglers.