The Sergeant Major (Abudefduf saxatilis) is a brightly colored saltwater fish known for its five vertical black stripes over a yellowish body. It is a damselfish species recognized for its territorial behavior and group living habits.
Scientific Name
Abudefduf saxatilis
Habitat
Common in shallow coastal zones like coral reefs, seagrass beds, and mangroves.
Conservation
Not considered endangered; found abundantly in natural coral reef ecosystems.
Lifespan
Typically 6–8 years in the wild.
Fun Fact
During breeding season, male Sergeant Majors change color to bluish and guard the eggs fiercely until hatching.
Diet
Omnivorous – eats plankton, algae, and small invertebrates.
Average Size
Grows up to 22.9 cm (9 inches).
Location / Placement info
Displayed in the Coastal Reef Exhibit, near the Ocean-View Tunnel
FAQ
What is the lifespan of the Sergent Major fish?
Sergeant Major fish typically live up to 6–8 years in the wild, and potentially longer in captivity with proper care.
What do Sergeant Major fish eat?
They are omnivorous, feeding on plankton, algae, crustaceans, and small invertebrates.
Are Sergeant Major fish aggressive?
Sergeant Majors can be semi-aggressive, especially when defending territory or during breeding.
What is the ideal tank size for Sergeant Major fish?
A minimum of 55 gallons is recommended due to their active swimming and territorial nature.
Do Sergeant Major fish need coral reefs to survive?
No, although commonly found near coral reefs, they can adapt to tank environments without live coral.
How big do Sergeant Major fish grow?
They can grow up to 6.5 inches (16.5 cm) in length.
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