Ecsenius lineatus, also known as the Linear Blenny or Lined Blenny, is a small reef dwelling blenny that enjoys perching on and hiding among rocks. It has a primarily brownish black body, with a white underside and transparent fins. It will graze on algae throughout the day, and should not be kept with aggressive fish. Though labeled reef safe, they have been known to nip at SPS, such as Acropora and Montipora, so use caution when housing in an SPS dominant system. Though it will feed on algae throughout the day, it should be fed an herbivorous blend of frozen foods to ensure it is receiving enough nutrients.