Paracanthurus is a genus of fish commonly known as surgeonfish, which are part of the family Acanthuridae. These fish are recognized for their vibrant colors and distinctive body shapes, often featuring a laterally compressed body and a sharp spine on either side of the tail. They are primarily found in tropical and subtropical oceans, particularly around coral reefs. One of the most well-known species within this genus is the palette surgeonfish, famous for its striking blue and yellow coloration. Paracanthurus species are herbivorous, feeding mainly on algae, and play a crucial role in maintaining the health of coral reef ecosystems by controlling algal growth.