You might find this interesting. There's a couple of fish we caught in the Gulf the Atlantic moonfish, and the Lookdown that are bright chrome with a very narrow profile. Your oarfish post got me thinking about them and how they probably use their thinness and reflective skin to sneak up on other fish. I looked around and found some interesting pics.
Moonfish:
Lookdown:
Juvenalle Lookdown.
Another Species of ribbonfish with a similar head.
