Blue swimming crabs are an important source of income for fishermen in the Malaysia, also known as ‘ketam bunga’ or ‘ketam renjong’ in the name of the local. The high price and increased demands in among community will cause the over-exploitation in production of blue swimming crabs. In 2003, total landings for P. pelagicus were approximately 175,000 tons and decrease to 165,000 tons in 2004 (FAO Fish Stat, 2009). This decline from over-exploitation has an impact in some Asian countries (Ikhwanuddin