Abudefduf vaigiensis, commonly known as the Indo-Pacific Sergeant Major, is a striking damselfish species prized for its bold patterning and lively behaviour. This medium-sized fish is native to the Indo-Pacific region and is a popular choice for marine aquarium enthusiasts who appreciate active and visually engaging livestock.
Care Level: Moderate. This species is hardy but requires stable water conditions and a suitably sized aquarium.
Temperament and Compatibility: The Indo-Pacific Sergeant Major is semi-aggressive and territorial, especially as it matures. It is best kept with other robust fish species and may not be suitable for very peaceful community tanks. Avoid housing with very small or timid fish to prevent stress or aggression.
Diet: Omnivorous. Feed a varied diet including high-quality marine flakes, pellets, frozen mysis shrimp, brine shrimp, and algae-based foods to ensure optimal health and vibrant colouration.
Minimum Tank Size: A minimum of 120 litres (approximately 30 gallons) is recommended to provide adequate swimming space and reduce territorial disputes.
Lighting and Water Flow: Standard marine aquarium lighting is sufficient. Moderate water flow is preferred to mimic natural reef environments and support fish health.
Placement: Mid to upper levels of the aquarium. Provide plenty of live rock for shelter and territory establishment.
Origin: Indo-Pacific region.
Maximum Size: Typically grows up to 15 cm (6 inches) in length.
Reef Safety: With Caution. May nip at corals or sessile invertebrates, so caution is advised in reef setups.
Overall, the Indo-Pacific Sergeant Major is a vibrant and engaging fish that adds dynamic movement and colour to a suitably sized marine aquarium. Proper husbandry and tank mates selection are key to maintaining a healthy and harmonious environment.


