Step 1: First draw two circular arcs on the paper. An arc is a fish's body, and both sides don't need to be closed. Select the opening position on one side and draw two closed ellipses as fish mouths. Note that the mouth is round and flat, as shown below.
Step two. Then draw an arc longitudinally at the quarter of the whole body near the mouth of the fish, and draw a circle of fish's eyes between the arc and the mouth to complete the painting of the fish head. Pay attention to the fish's eyes, as shown below.
Step three. Then draw the fishtail directly on the open end on the other side. The shape of the tail should be enlarged appropriately, and at the same time, the fish tail should be drawn with curves, giving people a sense of suspension of the fish in the water, as shown in the following figure.
The fourth step, then draw the dorsal fin and pectoral fin of the fish with curves, so that the image of the fish is more like swimming in the water, and describe the dynamics of the fish with curves and lines, as shown below.
Step five. Finally, complete all the connecting parts, check the proportion of each part, and check whether the fish tail is symmetrical up and down, as shown in the figure below. Here is a fish stick figure.
The above is a stick figure about fish, I hope it can help you.