Description Sera Nature makes the feeding of ornamental fish even more natural. All types of food in the series (eg Sera San Nature) are based on the compositions of their namesakes (eg San), but are produced without the use of dyes and preservatives. The color of the scales comes exclusively from added natural ingredients such as algae Haematococcus and krill. Krill, rich in carotenoids for natural coloring San Nature is characterized by an increased percentage of krill (marine crustaceans). Krill not only supports the development of flowers, but also increases the reception, vitality and readiness for reproduction of ornamental fish. These properties make krill an ideal ingredient for coloring foods, such as the new San Nature. Natural ingredients matter Healthy eating is a topical issue in the care of the aquarium. High quality food is the basis and is not only good for health but also for digestion. Food that is easily digested by fish reduces water pollution and thus leads to better living conditions and clean water. According to modern scientific studies, a varied diet with ingredients close to nature is the best protection against possible deficiencies. Vital substances such as vitamins, pigments, antioxidants, complex secondary plant substances, as well as prebiotics and probiotics are useful and essential substances that are added to food. According to current scientific findings, mainly natural substances such as astaxanthin have a particularly beneficial effect on well-being, disease resistance and longevity. Astaxanthin is derived from the alga Haematococcus and not only has antioxidant properties, increased fertility and immune boosting, but further enhances the coloration of ornamental fish. Compared to synthetic astaxanthin, the natural high-quality raw material leads to better results.