Blennies

Blenny (from the Greek ἡ βλέννα and τό βλέννος, mucus, slime) is a common name for a type of fish. The term is ambiguous, having been applied to several families of perciform marine, brackish, and some freshwater fish sharing similar morphology and behaviour. Six families are considered "true blennies", all grouped together under the suborder Blennioidei; its members are referred to as blennioids. About 833 species are found in 130 genera within the suborder.