Sporoderm created on the basis of spore-forming bacteria Bacillus subtilis and Bacillus licheniformis. Contains freeze-dried bacterial cultures of B. subtilis and B. licheniformis forming heat-resistant endospores. The content of viable spores for at least 3/ 10/9 CFU/g In this probiotic disputes submitted 100% of bacteria and so it freely passes the acidic stomach environment and enter the intestines, where the pH value less than 5.5, it begins to germinate from spores and reproduce. Bacteria B. subtilis and B. licheniformis used for the production of the drug, have a high resistance to juices and enzymes of the gastrointestinal tract of fish, antagonistic activity to pathogenic and conditionally pathogenic microorganisms, optimize the microbial balance in the intestine due to the specific activity of spore-forming bacteria to rebuild the microflora, increase nonspecific resistance of the organism of the fish is Used to normalize digestion, improve immunity, reduce the negative impact of stress factors in fish, prevention and treatment of infectious diseases, the normalization of microbial balance in the digestive tract, stimulate growth, increase of gain in live weight, increase sound to 100%.The presence of spore-bearing shell in bacteria enables the use of the drug in the process of making granular fodder, premixes, bmvd, since spore bacteria Bacillis subtilis and Bacillis licheniformis can withstand the high temperature (140 degrees ) and pressure, the effect of chemically aggressive substances.