Group-Based Mud Crab (Scylla serrata) Culture and Fattening for Sustainable Livelihoods of Coastal Communities of Bangladesh

Mud crab (Scylla serrata) fattening has emerged as a promising aquaculture practice in coastal Bangladesh,
offering a sustainable solution to pressing issues such as youth unemployment, underutilized coastal resources,
and growing global demand for premium seafood. Despite its export potential and ecological advantages, this
sector remains underexploited, particularly among educated but unemployed youth. This paper presents a
conceptual model for group-based mud crab fattening that integrates biological, ecological, and socio-
economic dimensions to promote entrepreneurship and inclusive livelihoods. Targeting regions such as
Khulna, Satkhira, Bagerhat and Patuakhali - where brackish water conditions favor mud crab growth - the
model advocates for cooperative farming among youth groups, supported by technical training, shared
infrastructure, and partial public or donor investment. Key features of the model include the formation of
gender-inclusive youth groups (20-25 members per union), establishment of demonstration ponds, and
periodic performance monitoring to ensure scalability. A financial simulation reveals that profitability
becomes sustainable from the very first cycle, following initial infrastructure investment. The approach
contributes to the national Blue Economy goals by converting job seekers into aquapreneurs and promoting
sustainable resource management. It aligns with global sustainable development goals (SDGs), particularly
SDG 1 (No Poverty), SDG 5 (Gender Equality), SDG 8 (Decent Work and Economic Growth), SDG 13
(Climate Action), and SDG 14 (Life Below Water).The model also addresses potential risks such as climate
vulnerability and access to capital by recommending strategic interventions, including microfinance support
and capacity-building programs. This framework provides a scalable, community-driven path for revitalizing
coastal livelihoods and strengthening Bangladesh’s position in the international aquaculture market.