Atlantic Croaker
Micropogonias undulatus · Fish, Vertebrate, Cold-blooded, Wild
Animal Family
Sciaenidae, order Perciformes, class Actinopterygii
Animal Category
Marine Animal
Breed / Variety
Wild species with no specific domestic breeds
Conservation Status
IUCN status is Least Concern with stable population trends, though local populations can be affected by overfishing and habitat degradation in estuaries.
About This Creature
Small to medium-sized fish with an elongated, compressed body, typically ranging from 30 to 50 cm in length and weighing up to 2 pounds. Silvery body with brassy or yellowish reflections, often marked with dark streaks or wavy lines along the upper back and sides. Features a moderately pointed snout and small barbels on the chin.
Physical Characteristics
Streamlined body shape, two dorsal fins with the first spiny and the second soft-rayed, a truncated or slightly rounded caudal fin, and small inferior mouth. Equipped with small chin barbels characteristic of the genus. Scales are ctenoid and cover the body, showing a silvery-grey dorsal coloration fading to a lighter silvery-white belly.
Behavior & Temperament
Social fish that often form schools, particularly in coastal estuaries. Active primarily at night or during crepuscular periods. Known for producing a distinctive croaking or drumming sound using specialized muscles against the swim bladder, especially during spawning season or when disturbed.
Habitat & Diet
Origin Region
Western Atlantic Ocean, ranging from the coast of Massachusetts in the United States down to the Gulf of Mexico and Argentina
Habitat
Marine and brackish waters, estuaries, shallow coastal bays with sandy or muddy bottoms. Aquatic and demersal
Diet & Nutrition
Carnivore and bottom feeder. Diet consists of small crustaceans, polychaete worms, mollusks, and small fish. Forages by probing sandy or muddy substrate with its mouth and chin barbels.
Lifespan & Health
Typically lives up to 4 to 8 years in the wild. Subject to predation by larger marine fish, birds, and marine mammals. Spawning occurs offshore during autumn and winter, producing pelagic eggs.
Special Characteristics
Notable for its ability to generate croaking sounds using its swim bladder, which serves a role in communication and courtship. Highly regarded as a recreational sport fish and commercial species.
Ecological Information
Serves as an important mid-level consumer in estuarine and marine food webs, transferring energy from benthic invertebrates to larger predatory fish, birds, and mammals.