Study on the Distribution of Fin Fish Juveniles in Few Selected Rivers of Indian Sundarbans

4 Abstract: Regular sampling of juvenile fish fauna over 12 months (from March 2010- February 2011) in and adjacent creeks of three rivers in one of the largest mangrove area of the world, Indian Sundarbans, revealed a difference in the species distribution and diversity. Mangrove swamps often creates a complex ecosystems linked by biological and physical processes. A total of 92 types of juveniles of different finfish species were recorded along with their river wise distribution in three different seasons. Different diversity indices were analyzed as well as different statistical tests was performed to understand the pattern of distribution in three rivers (Hetania Doania, Muriganga and Saptamukhi) in premonsoon, monsoon and postmonsoon period.