Blennioid fish, also known as blennies, are small, elongated marine fish that belong to the family Blenniidae. These fish are commonly found in shallow waters along rocky coasts and coral reefs. Synonymous terms for the blennioid fish include combtooth blennies, scaridae blennies, labrisomids, and clinids. Combtooth blennies are species that have specialized comb-like teeth for feeding on algae and small invertebrates. Scaridae blennies have a beak-like mouth that they use to feed on algae and bits of coral. Labrisomids are tropical blennies that inhabit rocky shorelines. Clinids are small, brightly colored blennies that are often found in shallow waters and rocky reef environments.