Predict age of a crab in Mud crab farming

Crab farming is a major aquaculture activity as there is a huge consumption demand of crabs in India. Commercial crab farming is a growing business in coastal areas of India and is looking profitable. Mud crab is highly popular due to its great demand in the export market. The commercial scale mud crab culture is developing fast along the coastal areas of Andhra Pradesh, Tamil Nadu, Kerala and Karnataka.