Trust me. They are banded rudderfish. For a really good time, throw a sabiki rig onto a light spinning rod and lower it to the bottom, jigging it slowly as you crank it up. You'll fill the rig with 7 or 8 of them every time!
Here's what Mclane's Fishing Encyclopedia says about them:
Banded Rudderfish (Seriola zonata) a fish of less than about eleven inches long have a dark nuchal band extending from the eye to the origin of the first dorsal fin and six prominent bars on the body. The anal-fin base (excluding the two detached spines) is relatively short; the second dorsal-fin base is about twice as long as the anal-fin base... The body is relatively slender. The second dorsal-fin lobe is relatively short....In smaller specimens the bars and nuchal band are solid black, thelower part of the body silvery, and the body between the bars is light brown with a faint golden or bronze stripe along the sides. The larger, unbarred fishare mostly brownish, darker above and lighter below.
The banded rudderfish ranges from Santose Brazil to Nova Scotia... This is apparently an inshore species, but the life history has not been ivestigated. The very young are often found under jellyfish and drifting weed, and slightly older fishhave habits similar to pilotfish in follwoing shrks and other large fish.
Page #98 has a sketch of one.