Blennies

Fish - Marine

The common name blenny is ambiguous at best, as it has been applied to several families of perciform marine, brackish and some freshwater fishes all sharing similar morphology (shape) and behaviour. There are six families considered "true blennies", all grouped together under the suborder Blennioidei; its members are referred to as blennioids. There are approximately 833 species in 130 genera within the suborder.

http://en.wikipedia.org/wiki/Blenny