Phylum Chordata Bateson, 1885 - chordates Subphylum Vertebrata Cuvier, 1812 - vertebrates Pisces Class Actinopterygii Woodward, 1891 - ray-finned fishes Order Syngnathiformes Berg, 1940 see Suborder Syngnathoidei Family Syngnathidae Günther, 1870 - pipefishes and seahorses