Paracanthurus hepatus, commonly known as Dory, is a species of fish belonging to the family Acanthuridae. This vibrant blue fish is easily recognized by its yellow tail and black markings. Dory is native to the warm waters of the Indo-Pacific region, often found in coral reefs where it feeds on algae. Dory is a popular aquarium fish due to its striking appearance and friendly behavior. It typically grows to about 12 inches in length and is known for its ability to navigate through complex reef environments. Dory's diet primarily consists of plant material, making it an herbivorous species.