On my second to last dive at the Blue Heron Bridge during my stay in Florida I noticed a fish hovering near a large conch. As I slowly approached, I noticed that it had some very nice coloration and was something I had never seen before. When I got a little closer, it darted under the edge of the shell of the conch, but after waiting for a few minutes it came back out and let me get some nice photos. When I checked my ID book, it turns out it is a Seminole Goby (Microgobius carri). Honestly, it reminds me of a freshwater killifish.