Population Structure of cirrhinus Mrigala from the Yamuna River at Allahabad

Random samples of Cirrhinus mrigala were collected from August 2011 to July 2012 in the lower stretch of the Yamuna river at Allahabad. The samples varied from 0 to 10+ age groups. According to the percentage occurrence age group 2+ was dominant, male (41.72%) and female (37.21%) of the population. Male population was dominated in 0 and 1+ age groups which contributed 6.13% and 23.31 per cent, respectively while female population was dominated in 3+ to 10+ age groups. In the stock, female population was greater than male. Male fishes were recorded only 7+ age groups while female fishes recorded 10+ age groups. The present study indicated dominance of female population ofC. mrigala in the Yamuna river.