Mud crab is one of many fisheries commodities that have a bright prospect in the future. The demand for
commodities is likely to increase from year to year, not only in Indonesia but also abroad. Currently the market
stock of mangrove crab in Indonesian are mostly from direct capture in nature. In the future, the activity of direct
capture for sale should be replaced by aquaculture activities in order to sustain the live stocks. Planning and
development of farming techniques are very important for the development of the various aspects to sustainability
objectives, the increase in production capacity, and market opportunities with regard to the balance and stability of
the mangrove ecosystems. A natural feed of mangrove crabs are all kinds of organic matter, both animal (dead/alive)
as well as plants using his claws (omnivorous scavenger). Crabs are very sensitive to contamination or pollution
especially toxic gases such as H2S and ammonia (NH3). Therefore, the farming of environmental management is
very important to implement [2]. The objectives of this study were to assess the effect of the effect of
cutting/removal of part of the locomotion appendages (mutilations) of the crabs on their growth and molting
process, the spatial and temporal change of environmental condition caused by crab farming practice using abiotic
and biotic datas, and to evaluate the environmental impact of farming practices of Scylla serrata using the shelter system.