Draw an oval or teardrop shape for the body
Add a triangle or forked shape for the tail
Draw a small circle or oval for the eye
Add a curved line for the mouth
Draw a fin on the top of the body
Add side fins near the middle of the body
Draw a bottom fin near the underside
Add curved lines inside the body for gills or scales
Outline the fish with a darker line
Erase extra sketch marks
Color the fish as desired