Purple Royal Discus Fish. Royal Discus is a blend of both natural and cultivated discus varieties, and the result is a vividly colored fish that makes an attractive addition to a tropical aquarium. The color of the body and head of the purple discus varies to some degree. It has a series of vertical stress bars on its body, and its head displays the thicker stress bar of the naturally occurring discus. Some are a pale golden color, while others are a vibrant blue and purple. The head of the purple discus has a pattern of white striations on it. The center of its body is covered with dark blue, irregular striations that are close together. The striations are longer and spaced further apart on the outer parts of the scribbled red discus’s body. The dorsal and pectoral fins are a dark red color covered with white striations. The tail fin of the purple discus is dark but opaque.
The purple discus is a large, tropical fish, and its body is quite round. At its full size, the discus will be approximately 8” long. Because of its roundness, its height is almost equal to its length. The scribbled red discus has full, rounded fins that extend almost the full length of its body, which contributes to its overall round appearance. The body of the purple is very flat as well. The purple discus is an interesting discus because of its beautiful blend of natural and cultivated discus markings, and it will make a great show fish for any tropical aquarium.