The price of colorful angel fish varies, the purchase price is between 20 and 30 yuan, and the least valuable ones cost 20 yuan each.
In addition, the Discus Angelfish is 20 cm long, nearly round, with flat sides, a very short caudal peduncle, and symmetrical dorsal and anal fins. The body is bright blue, or dark green, or tan, with 8 equally spaced brown-red horizontal stripes from the gill cover to the tail peduncle. The body color changes under the influence of light. When the light is dark, the body color is dark; when the light is bright, the colors are bright and rich, and the body is covered with stripes. The head, body and fins are difficult to distinguish from a distance, and resemble a discus on the track and field, so it is called "discus" in English.
