i just got a sailfin thursday, he's about 4in now (no pics yet) i have a question though, he wont go anywhere but the corner far corner of the tank...is this normal, i have him, my clown and my watchman goby in there and the clown does the same thing...i have a wavebox at the opposite end of the tank could they be scared of that? my goby lives below the box and he doesnt mind it. ohhh the tank is a 135G