He's about the same as the starry blenny I used to have in terms of behavior. They spend most of the time sitting on a rock but then they'll pop up into the water column for short periods of time, looking for food and stuff. From what I've heard about them, they usually pick a favorite perch in the rock that they stick to most of the time, but they don't live down on the bottom in the sand like some of the gobies. Mine has picked the top of the rock arch in my tank as its perch so far, so its pretty high up in the tank sitting next to all my SPS corals.