I didn't want to continue on off2gcm's question with my question regarding the identity of this fish. I believe I have finally determined how to link these photos to this forum. I originally thought it might be a trunkfish (I know nothing about fish in the Caribbean), but wonder now if it could be a cowfish? It looks like there are possibly little 'horns' in the enlarged picture. I took this in March in shallow water (just before reaching the large plot of sea grass near shore as I snorkeled back toward shore) off the smaller, west beach at the Retreat at Rum Point. I just think it is a cool looking fish whatever it is. And very well camouflaged!