44 Immune protection by sera fish food Immune support by mannan oligo- saccharides (MOS) The mannan oligosaccharides (MOS) used in sera food reveal a considerable immune support- ing effect. They belong to the prebiotics and reduce the growth of pathogens. The own immune defense of the body becomes more efficient, the animals there- fore become more resistant. The sera VIP concept The sera VIP concept consists of several components: The immune system of the fish can be supported by natural beta glucanes. This reduces the sensitivity of the fish towards diseases, the fish live healthier and longer. Body colors can be enhanced by herbal substances; secondary plant substances have positive effects on the entire metabolism of the fish. Long chained, highly unsatu- rated omega-3 and omega-6 fatty acids have positive effects on nerve cells, heart and circu- latory system. We blend the applied vita- mins by ourselves. By doing so, sera achieves better results than with ready-made blends as being used by other manufacturers. Strong immune system Brilliant colors Crystal clear water Best digestion Healthy and balanced growth Firm and even skeleton structure ©Jezper–shutterstock.com