Ophioblennius atlanticus, also known as the redlip blenny or horseface blenny, is a species of combtooth blenny, family Blenniidae, found primarily in the Western Central Atlantic ocean. Redlip blennies can be found in coral crests and shallow fringing reefs. They are highly territorial and attack intruders with two long, sharp canine teeth. The adults are found at depths of 10 to 20 meters, and the eggs are benthic.