The fish looks like an oval that’s why draw this figure first.
Add two lines on the left which widen to the end, forming a tail.
Connect the tail using a curved line.
Make the transition from the tail to the body more smoother and erase the unnecessary line.
Outlines of the head
Marlin’s head outlines are more flatter, similar to the side of the square but with rounded corners.
Draw a happy smile on its head on the bottom.
There is a pattern in the form of two lines on the fish scale. One is near the head, the other one separates the body and the tail.
Draw a big round eye above the smile.
The second eye is only slightly visible because Marlin is turned in profile.
Divide the tail
Don’t forget to divide the tail using the straight lines to give it the right shape.
Marlin, like all fish, has fins. They are small, smoothly expand at the end.
Decorate the fin with straight lines.
Fin on the back
The fin on the back provides the fish with mobility in the water. It’s depicted as a wavy line.
Add another small fin near the basis of the tail.
Details of the fin on the back
Decorate the fin on the back with slightly curved short lines.
Fin on the belly
Draw another fin on Marlin’s belly.
This detail is very small but also helps to maneuver in the water.
Strip on scales
The last detail is a curved strip near the fin.
Color the fish in orange and color the stripes in white.
Collage with stages of Marlin drawing