Images: 

My husband and I both noticed these fish on our first dive yesterday.  They look like intermediate slippery dicks, however the upper stripe is much lighter and they behaved very differently.  Instead of swimming about in small groups, they were solitary and hovered in one spot.  If we approched them too closely they darted into the sand.  You can see the burrow of one in the second photo.

So are they Slippery Dicks that dive into the sand, or some other type of fish? 

Photos were taken in 95-feet of water on concrete rubble and reef balls on a sandy bottom.  Location was the norhern Gulf of Mexico in the Panama City, Florida vicinity.

I've included a photo of the local slippery dicks in the intermediate phase so you can compare.

Carol