The tiger muskellunge (Esox masquinongy × lucius or Esox lucius × masquinongy), commonly called tiger muskie, is a carnivorous fish, and is the usually-sterile, hybrid offspring of the true muskellunge (Esox masquinongy) and the northern pike (Esox lucius). It lives in fresh water and its range extends to Canada, the Northeast, and the Midwest United States. It grows quickly; in one study, tiger muskie grew 1.5 times as fast as muskellunge. Like other hybrid species, tiger muskie are said to have "hybrid vigor," meaning they grow faster and stronger than the parent fish, they are also less susceptible to disease. Trophy specimens weigh about 30 lb. Its main diet is fish and small birds. The tiger muskie and the muskie are called the fish of 10,000 casts due to the challenge involved in cat