Hi, I have a firefish (the only fish there) in my 55 gallon tank that has 40 lbs or rock. It spends the majority (90%) of its time in between the rocks and doesn't come out for feeding unless I leave the tank (I have a camera pointed at the tank so I know that he's coming out when I'm gone). It's been well over 2 weeks since I got him and he's still like this. I know that he's still eating hence why he's still alive, but is this normal? I heard that firefish like to swim around and be active. How do I get him to be less "shy"?