Definition
Menhaden are small, oily fish in the herring family (*Brevoortia* genus). They're mostly found in the Atlantic Ocean. These fish are filter feeders, consuming plankton in large quantities. Think of them as the janitors of the sea, keeping the water clean. They're an important food source for larger fish, birds, and marine mammals. Menhaden are also harvested for fish oil and fish meal. They're valuable but also face overfishing risks.