The study site, Mithbav estuary opening broadly to the west coast of India. Individuals of Sillage sihama of 130 mm. in standard length (SL) or more were difined as adults, following histological examination of the gonads. To examine seasonal dietary differences, adults were collected monthly from cast net, gill net and filter (Yendi) net. The fishery was conducted within the estuary from April 2011 to March 2012. The juveniles were collected 3-4 cm. length samples with help of Yendi along with Penaeus indicus (white shrimp) on mud-flat region of mangrove swamp. The adults were collected through the bottom fishery of gill-net (Tiyana), cast net and others throughout the year.