These fish shed frequently, most of the time you guys don't notice it becuz they do so at night and the shed (the cuticle) is thin mucus like substance (which looks like snot and goes over your overflow). If you are ever lucky enuf to see a lionfish shed -you'll notice the lion first vibrate their fins, then blast/jet forward a few times and they trail a white vail. This mucus is their cuticle.
in the wild, scorpionfish (since they are sedentary "wait-around predators) are covered by a thin membranous layer (called the cuticle)to protect themselves from organisms which settle on top of them. So they shed and remove these adherent organisms. in the hom aqurim, shedding is related to stress and health. A heatlhy lion shed regularly w/ a heatlhy white shed, an unhealthy lion sheds more frequently, or not at all.
frank