Step 6: On the right side, draw two lines that fan out as a guide for the first part of the fairy basslet's tail. To the right of that, draw a big, wavy line that's similar to the number 3 to finish the guide for the tail. Pay attention to how big the fish's tail is compared to the rest of the body.
Step 7: Inside the first circle, draw two sloping lines with a curved line on the right side as a guide for the royal gramma's pectoral fin. This shape should be almost triangular. The right edge should come out of the circle a bit. Under the first circle, draw a long, curved line that slopes toward the right as a guide for the first pelvic fin. To the left, draw another long, curved line as a guide for the fish's other pelvic fin.
Step 8: On top of the royal gramma's body, draw two short lines as a guide for the first part of the dorsal fin. Curve the line on the right a bit. Connect the lines at the top using a long, wavy, horizontal line to complete the guide for the fish's dorsal fin.
Step 9: Under the body, to the right of the pelvic fins, draw a big, wide arc as a guide for the royal gramma's anal fin.
That's it for the guides! From this point on, press harder with your pencil for a more defined drawing.