The Vyatka is a river in Kirov Oblast and Tatarstan in Russia. It is a right tributary of the Kama. It is 1,314 kilometres (816 mi) long, and its drainage basin covers 129,000 square kilometres (50,000 sq mi).
The Vyatka begins in the northern parts of Udmurtia. It freezes over in the early November and remains so until the second half of April. The Vyatka teems with fish, including bream, roach, tench, sheat fish, pike, European perch, zander, etc.
The walleye (Sander vitreus, synonym Stizostedion vitreum), also called the walleyed pike, yellow pike, yellow pikeperch or yellow pickerel, is a freshwater perciform fish native to most of Canada and to the Northern United States. It is a North American close relative of the European zander, also known as the pikeperch. The walleye is sometimes called the yellow walleye to distinguish it from the blue walleye, which is a color morph that was once found in the southern Ontario and Quebec regions, but is now presumed extinct. However, recent genetic analysis of a preserved (frozen) 'blue walleye' sample suggests that the blue and yellow walleye were simply phenotypes within the same species and do not merit separate taxonomic classification.
In parts of its range in English-speaking Canada, the walleye is known as a pickerel, though the fish is not related to the true pickerels, which are members of the family Esocidae. It is also sometimes called a dory in British English (and its common name in French is the similar doré—meaning golden or gilded), although this name is also used for various other species.