Step #1
Start the tutorial work by drawing a circle, an oval & a curve line.
Step #2
Draw outline for head & eyes.
Step #3
Make outline for body & draw fins.
Step #4
Make tail & lower side fins.
Step #5
Make lines over the tail and over the fins as shown.
Step #6
Draw skin texture shape as shown.
Step #7
Finally, make necessary improvements to finish.
How to Draw a Koi Fish with Color Pencils [Time Lapse]