Definition
Genus *Esox* includes predatory freshwater fish like pikes and pickerels. They're famous for their long bodies and sharp teeth. Think of them as the ninjas of the fish world – silent, deadly, and masters of ambush. They're found in lakes and rivers across North America and Eurasia. Unlike more passive fish, *Esox* species actively hunt their prey. They play a key role in maintaining the balance of their ecosystems.