Shrimp mainly Black tiger shrimp (Penaeus monodon) contribute largely in coastal aquaculture of Bangladesh, in both rural and national economy which also play a major role of export earnings and employments in the coastal areas. The shrimp is the second highest foreign income earner of this country. Bangladesh has a large area of coastal tidal land of which 0.143 million hectares of land has been brought under brackish water shrimp aquaculture. More than 600,000 people are somehow engaged in backward and forward activities of shrimp aquaculture.Coastal shrimp aquaculture in Bangladesh is mainly confined to two regions, namely: Khulna and Cox’s Bazar. At present 80% of the shrimp farms are located at the southwest (Khulna) region while the rest are located in the southeast (Cox’s Bazar region) and other coastal areas.Two types of culture systems i.e. extensive type and improved extensive type) are in practiced for shrimp at present. More than 70% area is under extensive (traditional or primitive) type of culture.Hence the average production is around 150kg/ha/yr.