Discus fish are a popular species of freshwater fish that are prized for their striking colors and elegant, round shape. They are native to the Amazon River basin in South America, and can be found in slow-moving, heavily vegetated waters. Discus fish are known for their vibrant colors, which can range from bright reds and yellows to deep blues and greens. They are also known for their distinctive shape, which is flat and round, with a high, almost vertical dorsal fin. They can grow up to 8 inch