Ideal for bottom dwelling fish such as plecostomus, loaches, catfish, shrimp and more. Aqueon Tablets, Rounds and Pellets sink and dissolve more slowly to continuously provide food that accommodates bottom-feeder's typical eating habits. Aqueon Algae Rounds contain natural vegetable sources, such as spirulina and kelp, which algae eaters prefer. If necessary, break rounds and tablets into pieces to prevent overfeeding. The color enhancing formula is a blend of marigold, chili powder and astaxanthin to help promote brilliant colors in fish.