Phylum Chordata Bateson, 1885 - chordates Subphylum Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801 Pisces Class Actinopterygii Woodward, 1891 - ray-finned fishes see Clade Actinopterygii Woodward 1891 [Moore & Near 2020] Order Gasterosteiformes Gill, 1872 - sticklebacks see Infraorder Gasterosteales Family Gasterosteidae Bonaparte, 1831 - sticklebacks Family Hypoptychidae Steindachner, 1880 - sand-eels Family Indostomidae Prashad & Mukerji, 1929 - armored sticklebacks Family Pegasidae Bonaparte, 1831 - seamoths