Bold and brightly colored Leaf corals are one of my favorite to paint. Pair them with a bright paper and they look even better. I was going to go for a Swordfish at first, but the attractive dorsal fins of a Sailfish was much more alluring to paint.  I have read that Sailfishes are also the fastest fish in the sea because of their shape and those fins. All the more reason to paint one! Side note - This along with the Moon Jellyfishes make a great connecting diptych.