The Indo-Pacific Sergeant – Abudefduf vaigiensis is a vibrant and common fish found throughout the Indo-Pacific region. Known for its distinctive coloration and energetic nature, this species plays an important role in the marine ecosystem.
Description & Characteristics
The Abudefduf vaigiensis is a small to medium-sized fish, reaching a maximum size of 20.0 cm. It possesses a laterally compressed body with a deep, oval-shaped profile. The most striking feature of this species is its coloration. The body is generally a bright yellow, with distinctive black vertical bars that extend from the dorsal fin to the belly. These bars are often bordered by a thin blue line, enhancing the fish’s visual appeal. The dorsal fin, which runs along the back, is elongated and continuous, while the anal fin is smaller and located closer to the tail. The caudal fin, or tail fin, is rounded. The Abudefduf vaigiensis has a small mouth with strong jaws and teeth adapted for consuming its preferred food sources.
Habitat and Occurrence
The Abudefduf vaigiensis exhibits a preference for a diverse range of habitats, making it a versatile inhabitant of the Indo-Pacific region. They can be found in coastal areas, typically within the Intertidal (Eulittoral), intertidal zone between the high and low tide lines characterized by the alternation of low and high tides. This adaptation allows them to thrive in areas exposed to fluctuating water levels and various environmental conditions. Their preferred habitats include kelp forests, reef slopes, rocky reefs, and seaward facing reefs. They can be observed in depths ranging from 0.0 to 15.0 meters, showcasing their adaptability to different water depths.
Taxonomy
The Abudefduf vaigiensis belongs to the Class: Teleostei, Order: Ovalentaria incertae sedis, and Family: Pomacentridae. This classification highlights its evolutionary lineage and relationships with other fish species.
Feeding
The Abudefduf vaigiensis is an omnivorous species, feeding on a variety of organisms. Their diet consists primarily of invertebrates, including small crustaceans, worms, and mollusks. Additionally, they consume microalgae, which are microscopic plants that contribute to their nutritional intake. Zooplankton, small animal-like organisms that drift in the water, also form part of their diet. These varied feeding habits contribute to their ability to thrive in a variety of environments.
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