Explanation:

About 3.8 percent of the geographical area of Bihar is endowed with water resources, which gives scope for development of fisheries and aquatic biodiversity in water bodies like rivers, ponds, lakes, reservoirs and chaurs, the primary sector of the state's Gross State Domestic Product. The fisheries sector had a share of about 8% in the year 2019-20, the fish production in the state has increased from 5.07 lakh tonnes in 2015-16 to 6.41 lakh tonnes in 2019-20, growing at an annual rate of 6.58 per cent. In the case of fish production, Madhubani district comes in first place in Bihar, East Champaran district comes in second place and Darbhanga district comes in third place.