[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Pisces
     Class Osteichthyes Huxley, 1880 - bony fishes and tetrapods see Clade Osteichthyes Huxley 1880 [Moore & Near 2020]
       Order Scorpaeniformes Bloch, 1789 - mail-cheeked fishes see Order Perciformes Bleeker, 1859
         Family Cottidae Bonaparte, 1831 - sculpins
           Genus Icelus Krøyer, 1845
             1 Icelus bicornis (Reinhardt, 1840) - twohorn sculpin
             2 Icelus spatula Gilbert & Burke, 1912 - spatulate sculpin