Micropogonias undulatus, commonly known as the Atlantic croaker, is a species of fish found along the Atlantic coast of North America. It typically inhabits estuaries and coastal waters, preferring sandy or muddy bottoms. This fish is recognized for its distinctive croaking sound, produced by vibrating its swim bladder. The Atlantic croaker can grow up to 24 inches in length and is characterized by its silver body with dark spots. It is an important species for both commercial and recreational fishing, often sought after for its mild flavor and firm texture.