| Species | Name Used in Reference |
|---|---|
| Hippocampus algiricus Kaup, 1856 | Hippocampus algiricus (p. ) |
| Hippocampus angustus Günther, 1870 | Hippocampus angustus (p. ) |
| Hippocampus barbouri Jordan & Richardson, 1908 | Hippocampus barbouri (p. ) |
| Hippocampus comes Cantor, 1849 | Hippocampus comes (p. ) |
| Hippocampus fisheri Jordan & Evermann, 1903 | Hippocampus fisheri (p. ) |
| Hippocampus guttulatus Cuvier, 1829 | Hippocampus guttulatus (p. ) |
| Hippocampus histrix Kaup, 1856 | Hippocampus hystrix (p. ) |
| Hippocampus kelloggi Jordan & Snyder, 1901 | Hippocampus kelloggi (p. ) |
| Hippocampus lichtensteinii Kaup, 1856 | Hippocampus lichtensteinii (p. ) |
| Hippocampus mohnikei Bleeker, 1853 | Hippocampus mohnikei (p. ) |
| Hippocampus zebra Whitley, 1964 | Hippocampus zebra (p. ) |