👉 The term "clupeid" is a genus of marine invertebrates that includes several species of fish, shrimp, and crustaceans. Clupeids are characterized by their hard, bony外壳,which can be covered with scales or scales, and their ability to change color depending on the environment they inhabit. Some clupeids have been named after famous scientists who contributed to our understanding of them, such as Alfred Russel Wallace and Charles Darwin.