Does anybody know how clownfish behave before laying? I have recently added another clownfish to the tank, and in the last couple of days, I've noticed my old clownfish behaving strange, he/she has been swimming very close to the sand bed in the corners, not been eating, breathing really fast and I've also noticed he/she has been hiding in a cave which he/she has never done. Ever, does anyone know if this is normal behaviour or is he/she poorly?