Wrasses are a diverse family of fish known as Labridae, found primarily in tropical and subtropical oceans. They are characterized by their elongated bodies, vibrant colors, and a unique set of teeth that resemble human molars, which help them feed on small invertebrates and algae. These fish play a crucial role in coral reef ecosystems, often acting as cleaners by removing parasites from other fish. Wrasses can vary significantly in size, with some species growing up to 2 feet long, and they exhibit interesting behaviors, including changing sex during their life cycle.