What fish has a poisonous dorsal spine?

The fish known for having a poisonous dorsal spine is the stonefish. Stonefish are found in the coastal waters of the Indo-Pacific region and are considered one of the most venomous fish in the world. Their dorsal spines can deliver a potent venom that can cause severe pain, paralysis, and even death if not treated promptly. Caution is advised when handling or stepping on these camouflaged creatures in their natural habitat.