Estuarine stonefish (Synanceia horrida)

''Synanceia horrida'', also known as the estuarine stonefish or regionally as simply stonefish, is a species of venomous fish of the family Synanceiidae. They are carnivorous ray-finned fish with venomous spines that lives on reef bottoms, camouflaged as a rock. They are one of the most venomous fish in the world, and are often included in private and public aquariums.