Sera Fishtamin is the complementary food consisting of a carefully manufactured, emulsified multivitamin concentrate for all fish in fresh and marine water. It effectively and safely adds all essential vitamins to the diet. It closes possible supply gaps and prevents deficiencies when simply dripped onto the food or added to the water. Disease resistance, health and liveliness of the fish are enhanced. Application during stress situations, in case of a disease, for juvenile animals and for supporting breeding is particularly useful.