D Mandalghat II , Belpukur of Shyampur II Block of Howrah district West Bengal, India  has a unique feature of fish (Prawn) cum paddy culture in low lying paddy fields of Patnai 23, a long grain rice selected by Sir Daniel Hamilton during early 1920s at Gosaba block of South 24 Parganas.  More than 100 acres are covered by this tall Indica variety having duration of 145 days. Prawn comes to rice fields via a canal linked to River Hoogly.  In this stretch of land , there are 30 MUGRIS , a kind of fish catching  bamboo made  device. It is made of  narrow splits of bamboo. Initially, they get 10 kg of prawn each day by giving evening labour of 1.5 hours and one hour in the morning by 12 people . On an average 300 kg prawn ( mainly) is being harvest earning about Rs 75000/ ( Rs. 250 a kg)  and in 4.5 months time it comes to around  Rs. 3.3 lakh. They use little bit of chemical fertilisers but no pesticide  but the waste dye  from nearby Anantapur  garment (banyan) factory pollutes the rice ecosystem and hampers growth of prawn jeopardising the livelihood of the farmers. They want  this natural rice ecosystem alive for their long term livelihood. Mr Ajit Mandal is one of the leading farmers of that area.