Tetrodotoxin is a potent toxin that is found in a variety of marine organisms, including pufferfish and certain species of octopus. This toxin is known for its ability to paralyze the nerves and can be deadly if ingested in high amounts. There are several synonyms for the word tetrodotoxin, including TTX, Fugufish toxin, and pufferfish poison. Other common names for this toxin include blowfish poison, fugu toxin, and tetraodontoxin. Regardless of its name, tetrodotoxin is a dangerous substance that should be handled with extreme caution by trained professionals in a controlled environment.