From one ugly fish:
To one delicious dish:
According to Wikipedia's article on the order Perciformes, family Trichiuridae, there are 40 some species of this fish all around the world. Also called Cutlassfish, Hairtails, Walla Walla, or Frostfishes. They are silver colored, and because they look like a steel blade they've earned two of those those names. Now if I caught one, I don't think I would be comparing it to a shiny steel, but something from a nightmare. I would run first and wouldn't worry about cooking it.
Fortunately, this came freshly frozen and filleted, so there was nothing frightening about it at all. (Believe me when I say that getting a fish that has been filleted is indeed a joyous event here in Korea for us westerners no used to choking on bones)
Now go fry some up some sword-like nightmares and enjoy.