Hey i just got a clam and i re aquascaped my whole tank so that i can keep it on top close to the lights.....i also have my frogspawn on top and my marroone hosting it....my clown keeps biting the shell and then smacking it off the rocks...he did it three times and i kept putting it back up there cause that's where i want it....i put a rock between the two now but if i keep putting it on top will it keep knocking it over or will the clown get used to it........