How to draw a sketch of a fish?

1, first, draw the outline of the body of the fish, and then draw a curve in the outline as the head of the fish.

2, then, in the head of the fish, draw the fish's eyes and mouth, the fish's mouth is very big so the line should be a little longer.

3. Draw the dorsal and ventral fins of the fish, and draw a few lines on the fins as lines on the fins.

4, and finally just draw the tail for the little fish.