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Dams as barrier that restrict the flow of water. Dams not only suppress floods but also provide water for human activities such as aquaculture, consumption, irrigation, industrial use and navigability. One of the finest environmental challenges of this century is to preserve the natural organic structural and functional attributes of aquatic ecosystems and rivers mainly. The construction of dams effects the fish population. Dams change the migratory fish habit. Changes in discharge regime or water satisfaction can also have indirect results on fish species. Anthropogenic effects on migratory fishes are observed. Total number of fish species were found 44, belonging to 8 orders, 17 families and 27 genera.

The present study was carried out to assess the socio-economic condition of fishermen of Egra-I block in Purba Medinipur district during the period from August 2022 to December 2022. The data were collected from 65 fishermen through survey sheet. The study was executed on the basis of personal interview. The study shows that most of the fishermen (95%) were Hindus, where 5% Muslims. The educational level of fishermen was very poor, 2% illiterate, 75% Primary pass, 15% Secondary pass and only 8% Higher Secondary pass. The housing condition of fishermen is maximum kutcha (65%), pucca (25%) and semi-pucca (10%). It was observed that there were 85% nuclear and 15% joint families. The annual income of fishermen varies from Rs.45,000 to Rs.1,00000. The main occupation of fishermen is the cultivation of paddy and ground nut. Fishing is the secondary occupation.

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