Present investigation was carried out on the fish samples of river Yamuna from Sadiapur fish landing centre during January 2008-December 2009. Studies were undertaken to assess the age composition, growth rate and age pyramid of Cyprinus carpio var. communis. Age composition varied from 0 to 13? age groups. The maximum growth was recorded at 1? year (20.69 cm) and minimum at the 9? year (3.01 cm) of the life cycle. Growth of C. carpio was higher than that of recorded in Europe and Australia. According to percentage, 0 age group shared 7.53 % only. Age group 1? was dominant (24.60 %), which was observed to be nearly one-fourth of the total collected samples. The difference was very high in 0 to 1? age groups (17.16 %).

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