Symphysodon, also known as discus, is a genus of brightly colored tropical fish. These fish mainly reside in the long, sinewy waterways of the Amazon Basin. Because of their vivid colors and intricate markings, the discus is one of the most popular tropical aquarium fish in the world. They have undergone selective breeding in captivity for unique types of exotic markings and patterns, many of which don’t exist in the wild.

Discus with its relatively flat, rounded body. Large, prominent fins protrude dorsally and on the rear of the fish. As mentioned previously, the discus is classified according to coloration: blue, red, or green. However, there are multitudes of unique patterns. The fish also have remarkable Color-changing abilities based on age, mood, environmental conditions, and stress levels.