Numerous studies around the world have shown that the bulk of the cost of industrial aquaculture, including fish and shrimp, goes to feed. Given this fact, improving feed quality will play a significant role in reducing the cost of aquaculture and thus the cost of protein production. In this regard, Lajvar aquatic feed factory was established in Arak using advanced technology and equipment as well as the expertise and knowledge and experts of the aquatic feed production industry.