Trivia: What is NOT a type of crustacean?
The correct answer is Mussels
So why is this answer correct? : All crustaceans are shellfish, but not all shellfish are crustaceans. Crustaceans are a large group of arthropods that fall into the shellfish category because they are edible. Marine crustaceans have various predators, including humans. Crabs, lobsters, and shrimp are the most commonly farmed crustaceans.