sera spirulina tabs are superior quality food tablets for all fish in freshwater and marine water aquariums. sera spirulina tabs contain 27 % Spirulina as well as selected vegetable ingredients such as plankton, seaweed, spinach and precious herbs. sera Spirulina Tabs are an excellent food for live-bearing tooth carps, suckermouth catfish and East African Cichlids. They are rich in herbal protein as well as added vitamins and are also eagerly eaten by many barbs and characins. Since the tabs keep their shape for a long time they also allow for eating slowly without polluting the aquarium water.Do you have questions about this article ?