TetraMin Tropical Crisps Advanced Formula for Optimal Nutrition TROPICAL FORMULATION: Specially designed for use as a staple food for your tropical fish. OPTIMAL HEALTH: Contains all essential nutrients  provides a high concentration of maximum nutrition. UNIFORM SIZE: Provides consistency in feeding with superior, highly digestible ingredients. CONCENTRATED COLOR: Algae meal stimulates richer color. ADVANCED CLEAR-WATER FORMULA: Up to 35% less waste than competing flakes.