Venomous fish are fascinating creatures that can deliver a painful sting or harmful effects through their venom. Unlike poisonous fish, which are harmful when eaten, venomous fish use specialized structures, like spines or glands, to inject venom into predators or threats. Examples include the stonefish, known for its camouflaged appearance and potent venom, and the lionfish, which has long, spiky fins that can cause severe pain. These fish are often found in warm, tropical waters and play important roles in their ecosystems. While they can be dangerous to humans, they are also vital for maintaining the balance of marine life. Understanding venomous fish helps us appreciate the complexity of ocean ecosystems and the need for conservation.