Blennius

Blennius is a genus of combtooth blennies, ray-finned fish in the family Blenniidae. These small fish are typically found in shallow coastal waters, particularly in the Mediterranean Sea and the eastern Atlantic Ocean. They are characterized by a lack of scales, a continuous dorsal fin, and fleshy cirri (small, slender appendages) above their eyes.

Blennies of the genus Blennius are benthic creatures, meaning they primarily live on or near the seabed. They often inhabit rocky reefs, tide pools, and areas with seaweed or other vegetation. They are generally small in size, rarely exceeding 15 centimeters (6 inches) in length.

Their diet consists mainly of algae and small invertebrates. Blennius species are known for their territorial behavior, particularly during breeding season. Males often guard nests and compete for mates.

Several species are included within the Blennius genus, including, but not limited to, the Montagu's blenny (Blennius montagui). The taxonomy of the Blenniidae family, including the genus Blennius, has undergone revisions and may continue to be refined based on ongoing research.