Step 1: Draw the eye on the right and create the eyelid for the left.
Step 2: Add the eye to the left side, and eyelids to the right.
Step 3: Draw the mouth. Make it big, oblong, and frowny. Add the pupil to both eyes.
Step 4: Now we will create the body. Make the top of his body a curved line. Make the lower part a smaller curved line.
Step 5: Add the top of his body next.
Step 6: Next we will add the details to the face. Put some lines under his mouth and next to his jaw.
Step 7: Last, we shall draw the fins. They are rounded triangles for the fins on his belly. The fin on his back is mad of upside down "u" shapes. Make them in a row.
How to Draw a Tilapia Head – Step-by-Step Tutorial