The northern pike (Esox lucius), known simply as a pike in Britain, Ireland, most of Canada, and most parts of the United States(also called jackfish or simply “northern” in the U.S. Upper Midwest and in Manitoba), is a species of carnivorous fish of the genus Esox (the pikes). They are typical of brackish and fresh waters of the Northern Hemisphere (i.e. holarctic in distribution).
Pike grow to a relatively large size: the average length is about 70–120 cm (28–47 in). Even so, lengths of up to 150 cm (59 in) and weights of 25 kg (55 lb) are very rare. The heaviest specimen known so far was caught in 1983 at an abandoned stone quarry in Germany, where the species is called Hecht. This specimen was 147 cm (58 in) long and weighed 31 kg (68 lb).