The Bihar government banned the sale, transportation and storage of fish for 15 days in Patna Municipal corporation area.
The ban was imposed after high contents of formalin, lead, mercury and cadmium were found in fish samples.
The ban has been imposed under the provisions of the Food Safety and Standards Act, 2006.
The use of formalin and other heavy metals beyond the normal limit may cause various ailments in humans like pneumonia, bronchitis, Hepatitis and cancer.