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The scales for the present investigations were collected from Yamuna River, Dehradun, Uttarakhand, from the months of March 2018 to May, 2019. In total, scales were collected from 191 fishes. The age ranges from 1 to 4+ years in examined material. The sample was ranged between 23cm to 50.9 cm length and 110 to 1030 g weight of Cirrhinus mrigala obtained from the various sampling sites. The minimum andmaximum values of Condition factor (K) were observed between 0.99 to 1.19. The fishes show a linear but not directly proportional body: scale relationship. The minimum value of scaleradius to annulus was 3.8mm and length at the time was 181.6 mm, while the maximum value of scale radius to annulus was recorded 27 mm and the length at that time was 458.1 mm (by back calculation method). [ABSTRACT FROM AUTHOR]