The Chocolate Surgeonfish, Night Surgeonfish, Thompson’s Surgeonfish, Thompson’s Tang, Whitetail Surgeonfish, scientifically known as Acanthurus thompsoni, is a captivating species of fish belonging to the surgeonfish family. These vibrant fish are renowned for their distinctive coloration and intriguing behavior, making them a favorite among marine enthusiasts.
Description & Characteristics
Acanthurus thompsoni typically reaches a maximum size of 27.0 cm, showcasing a striking appearance. Their bodies are adorned with a mesmerizing blend of brown and white hues, with a prominent white tail fin. This unique coloration, particularly the contrasting white tail against the dark brown body, has earned them the moniker “Whitetail Surgeonfish.” They possess a distinctive, laterally compressed body shape common to surgeonfish, which aids in maneuverability through coral reefs. They have a sharp scalpel-like spine located near the tail, a characteristic feature of the surgeonfish family. This spine is used defensively, capable of inflicting a painful cut if threatened.
Habitat and Occurrence
Acanthurus thompsoni is a common inhabitant of coral reefs, demonstrating a preference for shallow to moderately deep waters. They have been observed in the Indo-Pacific region, ranging from the Red Sea to the Pacific Ocean. Typically, they inhabit depths ranging from 0.0 to 119.0 meters, exhibiting adaptability to varying marine environments. Their favored habitats include coral reefs, rocky shores, and lagoons, where they thrive amongst diverse marine life. The presence of Acanthurus thompsoni in these ecosystems highlights their role as integral members of the marine ecosystem, contributing to the balance and health of the coral reefs they inhabit.
Taxonomy
Acanthurus thompsoni belongs to the Class: Teleostei, Order: Acanthuriformes, and Family: Acanthuridae. This classification places them among a diverse group of fish known for their vibrant colors, unique body shapes, and often, the presence of a sharp scalpel-like spine near their tail. This lineage reflects the evolutionary adaptations that have allowed them to flourish in marine environments, particularly in the vibrant and diverse coral reefs where they are often found.
Feeding
Acanthurus thompsoni are herbivorous fish, primarily feeding on algae and plankton. Their diet can also include small invertebrates. In aquarium settings, they are known to readily accept a variety of foods, including brine shrimp, flakes, frozen food (large sort), krill, mysis, and nori-algae. This adaptability makes them relatively easy to care for in captivity, further enhancing their popularity among aquarium hobbyists.
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