Methods: Cut the cardboard as the main body of the fish into a spindle shape and cut the tail into a fan shape. The cardboard used as fish scales is cut into small circles, and the front fish scales overlap from tail to front in two thirds of the fish. Draw scattered lines on the tail with a marker as the grain of the fish tail. Then use Mark to draw small round eyes and cut a small mouth on the fish mouth. In this way, a beautiful cardboard fish is finished! Of course, what color cardboard does the landlord like to use?