Definition
Clupeidae is a family of ray-finned fish, commonly known as herrings, shads, sardines, and menhaden. These fish are typically small, silvery, and schooling, meaning they swim together in large groups. They are found in oceans and some freshwater environments worldwide. Clupeids are a vital food source for many larger marine animals, including birds and mammals. Think of them as the popcorn of the sea – a readily available snack! They play a critical role in marine ecosystems. They're also important commercially, being harvested for human consumption and fish oil.