EM･1® Acuacultura is a natural probiotic comprised of a mixture of beneficial microorganisms that is used in the aquaculture production systems including shrimp and fish farming. This product displaces pathogenic microorganisms in water, soil and the organic loads within the ponds while reduces odor and create a favorable environment for the production of shrimp and other fish. EM･1® Acuacultura is used in both in the feed and applied in the water and soil and upon the organic loads generated within the ponds. Within the feed it serves as a probiotic that improves the digestive system of the shrimp or fish while increasing the digestibility of the feed while protecting against growth of pathogenic organisms by maintaining the natural microbial composition. In the water, it increases the rate of decomposition of such organic material while it suppresses the growth of harmful microbes within at the same time.