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Sergeant Major

Sergeant major

Abudefduf saxatilis

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Species Type:


Common Name(s):

Sergeant major


Only weighing around half a pound and growing to be 9 inches (23 centimeters) long on average, sergeant major are considered a smaller reef fish.


Algae, small crustaceans, small fishes, plankton, and aquatic invertebrate are all on the menu for the sergeant major fish.

Range & Habitat:

Sergeant major exist in the warm waters of the Atlantic Ocean, Caribbean Sea and the Gulf of Mexico.


Highly social fish, sergeant major travel in schools near shallow reef communities, caves, shipwrecks and other sheltered areas for protection. When June and August roll around, this species begins the reproduction process with mating rituals. Females lay around 200,000 eggs while males build and protect the nests. This species is listed as Least Concern on the International Union for Conservation of Nature’s Red List of Threatened Species.