Zeigler Spirulina Flake is a complete and nutritionally balanced diet formulated for herbivorous (plant eating) tropical fish. The diet incorporates enhanced levels of Spirulina, as well as other natural color enhancers, for algal feeding tropicals. Highly digestible marine proteins are incorporated to increase palatability and digestibility, and thus minimize excreted waste. Increased levels of Stable Vitamin C and Brewers Yeast are included in the diet to promote healthy gill, fin, and tissue development.