Marine fishery in the Bay of Bengal and in the surrounding coastal areas is a highly valued renewable natural resource in the agricultural sub-sector of Bangladesh. It bestows the national economy with ample employments, food security, export earning, and is a safety net for the people who possess little. Its capture fishery Bangladesh in the Bangladesh chapter is placed third at the global level reflecting its economic significance of sustainable use. The essay makes an effort towards a quantitative analysis of marine fisheries development and tries to draw some qualitative implications of fisheries development in Bangladesh. In the time series analysis, it is found that both effort level and investment in marine fisheries must have reached a saturation level. While existing poverty may exacerbate overfishing phenomenon in capture areas, the fishing right arrangements require certain over-hauling including effort-control and the joint conservation practices.