[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Pisces Class Osteichthyes Huxley, 1880 - bony fishes see [unranked] Euteleostomi Order Osmeriformes - freshwater smelts see Suborder Osmeroidei Family Alepocephalidae - slickheads Genus Rouleina Jordan, 1923 - Roule's smooth-head Rouleina maderensis Maul, 1948 - Madeiran smooth-head