What is fish that blows up?

The fish that blows up is commonly known as the pufferfish or the blowfish. Pufferfish have a unique defensive mechanism where they can inflate their body with water or air when threatened, making it difficult for predators to swallow them. This inflation causes their spines to stick out, making them appear larger and more menacing. Pufferfish are found in tropical and subtropical waters around the world and come in a variety of sizes and colors. They are also known for containing a toxic compound called tetrodoxin, which is deadly if ingested by humans. Despite the risks, pufferfish are considered a delicacy in some cultures, where specially trained chefs know how to properly prepare them for consumption.