A juvenile trumpetfish (Aulostomus chinensis), doing his very best slate pencil urchin spine impression.

The head of an adult trumpetfish. Note the complex jaw structure...when one of these fish feeds, those jaws unhinge and open out just like the bell of a trumpet, hence the common name.

Did I mention that trumpetfish have different color phases? This is a very large adult that's taken to hanging around with schools of milletseed butterflyfish at the wreck of the St. Anthony...he does match their coloration pretty well, so in a big school he can sneak up on you.

A juvenile coronetfish (Fistularia commersonii), distinguishable from a trumpetfish in being ventrally rather than laterally compressed, and also in that it swims with a very graceful, eel-like motion of the caudal fin. This one is only about a foot long, but they do get quite large when they mature...I've seen them almost as big as I am!

Art for arts sake. You can figure out the angle of the sunlight by the shadow on the bottom. See the black and white version of this photo in my professional portfolio.

A juvenile Trumpetfish (Aulostomus chinensis), taking refuge under the wing of the Helldiver...

A school of coronetfish (Fistularia commersonii)