Bangladesh is gradually emerging as an economic power with its limited resources and has become a centre of attention as one of the fastest-growing economies globally. The current economic turmoil in the South Asian region due to changing regional and global dynamics and frequent climate threats reminds us to rethink the existing economic management strategies and initiate alternative potential financial sources to avoid any economic crisis. The declining capture stocks, peaking protein demand by the growing population, and shrinking land-based resources are pointing to the essence of the expansion of mariculture to satisfy the excessive need. We have a substantial area from coastal lagoons to the open ocean for mariculture.