The term ‘clupeid’ refers to a member of the fish family Clupeidae, which includes various species of fish commonly known as herrings, shads, and sardines. These fish are typically characterized by their compressed bodies, silvery scales, and schooling behavior. Clupeids are often important for commercial fishing and are known for their role in marine ecosystems as both prey and predators. The word can be used as both a noun and an adjective.
