Ecsenius sellifer, known commonly as the Saddle blenny in Guam, or the Saddle clown blenny in Micronesia, is a species of combtooth blenny in the genus Ecsenius. It is found in coral reefs in the western Pacific ocean. It can reach a maximum length of 4.1 centimetres. Blennies in this species feed primarily off of plants, including benthic algae and weeds.