Surgeonfish, belonging to the family Acanthuridae, are colorful marine fish commonly found in tropical and subtropical oceans. They are recognized for their laterally compressed bodies and sharp spines, or "scalpels," located on either side of their tails. These spines can be used for defense against predators. Surgeonfish primarily feed on algae, playing a crucial role in maintaining the health of coral reefs. There are over 75 species of surgeonfish, including popular types like the Blue Tang and Yellow Tang. They are often seen in schools and are known for their vibrant colors and patterns, which can vary significantly between species. Their unique appearance and behavior make them popular in both aquariums and marine ecosystems.