Lion-fish is a colorful fish that inhabits coral reefs in shallow sea waters. “Lions” have characteristic colorful scales and poisonous quills on their fins. Such quills when used cause painful wounds that are difficult to heal. A prick by a lion-fish causes nausea, difficulties in breathing, paralysis, convulsions and a collapse, which may even lead to death. Quills with venom are the basic protection mechanism of the "lions" against predators.