Syngnathidae
Hippocampus abdominalis Lesson, 1827
Hippocampus alatus Kuiter, 2001
Hippocampus algiricus Kaup, 1856
Hippocampus angustus Günther, 1870
Hippocampus barbouri Jordan & Richardson, 1908
Hippocampus bargibanti Whitley, 1970
Hippocampus biocellatus Kuiter, 2001
Hippocampus borboniensis Duméril, 1870
Hippocampus breviceps Peters, 1869
Hippocampus camelopardalis Bianconi, 1854
Hippocampus capensis Boulenger, 1900
Hippocampus colemani Kuiter, 2003
Hippocampus comes Cantor, 1849
Hippocampus coronatus Temminck & Schlegel, 1850
Hippocampus curvicuspis Fricke, 2004
Hippocampus debelius Gomon & Kuiter, 2009
Hippocampus denise Lourie & Randall, 2003
Hippocampus erectus Perry, 1810
Hippocampus fisheri Jordan & Evermann, 1903
Hippocampus fuscus Rüppell, 1838
Hippocampus grandiceps Kuiter, 2001
Hippocampus guttulatus Cuvier, 1829
Hippocampus hendriki Kuiter, 2001
Hippocampus hippocampus (Linnaeus, 1758)
Hippocampus histrix Kaup, 1856
Hippocampus ingens Girard, 1858
Hippocampus jayakari Boulenger, 1900
Hippocampus jugumus Kuiter, 2001
Hippocampus kelloggi Jordan & Snyder, 1901
Hippocampus kuda Bleeker, 1852
Hippocampus lichtensteinii Kaup, 1856
Hippocampus minotaur Gomon, 1997
Hippocampus mohnikei Bleeker, 1853
Hippocampus montebelloensis Kuiter, 2001
Hippocampus multispinus Kuiter, 2001
Hippocampus nvae-hollandae Steindacher
Hippocampus paradoxus Foster & Gomon, 2010
Hippocampus patagonicus Piacentino & Luzzatto, 2004
Hippocampus pontohi Lourie & Kuiter, 2008
Hippocampus procerus Kuiter, 2001
Hippocampus pusillus Fricke, 2004
Hippocampus queenslandicus Horne, 2001
Hippocampus reidi Ginsburg, 1933
Hippocampus satomiae Lourie & Kuiter, 2008
Hippocampus semispinosus Kuiter, 2001
Hippocampus severnsi Lourie & Kuiter, 2008
Hippocampus sindonis Jordan & Snyder, 1901
Hippocampus spinosissimus Weber, 1913
Hippocampus subelongatus Castelnau, 1873
Hippocampus trimaculatus Leach, 1814
Hippocampus tyro Randall & Lourie, 2009
Hippocampus waleananus Gomon & Kuiter, 2009
Hippocampus whitei Bleeker, 1855
Hippocampus zebra Whitley, 1964
Hippocampus zosterae Jordan & Gilbert, 1882