Thanks for all of the feedback. He is actually starting to get brave enough to swim around the tank when I watch him from a distance. When I move closer, he retreats back under or behind the driftwood. I also have been sitting in front of the tank for like 10-15 min at a time to get him used to my presence and he'll cautiously swim to the front of the tank but as soon as I move he swims for cover. So I guess he's slowly coming along.