Lawnmower Blenny

The Lawnmower Blenny is a very popular algae eating blenny. The lawnmower blenny, which is relatively hardy as long as it is getting enough food,  is mottled with greenish and/or brown, with small blue and black spots on the head. It will eat frozen food sometimes, but not often enough to survive off of. You need to make sure that there is enough food in the tank in the form of common brown algae for it to graze on through out the day. Many of this species will learn to love the brown algae that grows on the glass. It is best to leave the back wall un scraped, giving them a backup food source, if they completely clean all other rock surfaces.