The fish, highly nutritious, as first class animal protein and balanced food with essential amino acids in correct proportions for human and animal lives, deteriorates very fast after its death being cold-blooded animal. Their availability is not the same always, showing abundance in some seasons, and shortage in other times. They therefore, need to be preserved, when available in plenty for the use in scarce season in a good condition. The fish being the most widely tradable commodity, world wide, their preservation and processing in a proper manner are all the more necessary for acceptance in global markets. The problem is two-fold, (i) retardation of spoilage to increase its shelf-life and keeping quality and (ii) processing, which involves in products flow from production sectors to the consumption sectors, besides handling, transport and storage of the products.