Doctor Fish (Acanthurus chirurgus)
The Doctor Fish is a striking and robust surgeonfish, recognized by its silvery-gray body, prominent dark vertical stripes, and the sharp “scalpel” spine near the tail used for defense. Its graceful swimming and active grazing behavior make it an engaging and dynamic addition to large marine aquariums. Known for its hardy nature, the Doctor Fish is a favorite among hobbyists looking for an active mid- to upper-level swimmer.
Size: Typically grows up to 12 inches in length
Country of Origin: Western Atlantic Ocean, including the Caribbean Sea, Florida, and northern South America
Latin Name: Acanthurus chirurgus
Care Level: Moderate – requires a spacious, well-established aquarium with stable water parameters, open swimming areas, and ample algae for grazing
Doctor Fish are herbivores that primarily feed on marine algae. In captivity, their diet can be supplemented with dried seaweed, spirulina, and high-quality herbivore flakes or pellets. They are reef safe with caution, generally coexisting peacefully with corals but potentially aggressive toward smaller or similarly shaped tankmates. Their bold coloration and active grazing habits make them a valuable and visually appealing addition to marine aquariums.