The Picasso Percula Clownfish, like many other aquacultured clownfish receive grades on their banding patterns. A Grade A fish is the most spectacular in its variation, banding, and coloration. These are the prized specimens that are often the centerpieces of many tanks. For the case of the Picasso Percula Clown this means the clown will have most spectacular curves, strokes, and banding patterns. Grade B fish exhibit many of the same qualities as Grade A fish just to a lesser extent. They will still have beautiful wavy bands but they may not connect. A Grade C fish will be just the same with possibly less wavy and beautiful lands. The grades have nothing to do with the fish's health, simply their visual appearance.