I'm not sure... for the ones you can keep in an aquarium, I guess frogfish are my favorite. I want one someday...
Can you keep that in an aquarium?
Thanks for producing the great video amzar. My vote goes for the Blue Ribbon Eel. I managed a large lfs in Dallas in the late 80s and had the chance to care for a large variety of fish. I agree with your pick being a top contender. My runner up would be the clown butterfly, though you do not see them in the trade much any more.
My favorite fish is a Black Volitan Lionfish. I know they are destructive in the wild as well as in a fish tank, but they are beautiful. The 'wings' on them are awesome looking, and throwing a feeder or two or three in the tank and watching them get sucked up whole in half a second is amazing every time.