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Tench is a fish belonging to the carp family, but it is the only existing representative of the genus Tinca. Tench is easy to distinguish from other fish. The body is quite thick, with a shortened, as if chopped off, tail. Small elongated scales, firmly seated in the skin, are completely covered with mucus. As a rule, the back is dark or dark greenish, the sides are light green with a golden tint, the belly is grayish. The color of the body depends on the color of the bottom, water and vegetation.