There were many reports of Plecostomus getting thinner with each passing day. To address this problem, Hikari began researching raw materials and production techniques to develop potential diets. After considerable experimentation, we developed the best ingredient formulation possible. Next we had to develop a pellet the fish would eat, one that wouldn't dissolve in water and allowed the nutrition to be accessed readily. The revolutionary disk shape was chosen because it complimented the way Plecostomus eat.