n = 8
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Acentronura australe | Waite & Hale, 1921 | Idiotropiscis australis | Syngnathidae | Southern little pipehorse |
| Acentronura breviperula | Fraser-Brunner & Whitley, 1949 | Acentronura breviperula | Syngnathidae | |
| Acentronura dendritica | (Barbour, 1905) | Amphelikturus dendriticus | Syngnathidae | Pipehorse |
| Acentronura gracilissima | (Temminck & Schlegel, 1850) | Acentronura gracilissima | Syngnathidae | Bastard seahorse |
| Acentronura larsonae | Dawson, 1984 | Idiotropiscis larsonae | Syngnathidae | Helen's pygmy pipehorse |
| Acentronura lumnitzeri | (Kuiter, 2004) | Idiotropiscis lumnitzeri | Syngnathidae | Sydney's pygmy pipehorse |
| Acentronura mossambica | Smith, 1963 | Acentronura tentaculata | Syngnathidae | Shortpouch pygmy pipehorse |
| Acentronura tentaculata | Günther, 1870 | Acentronura tentaculata | Syngnathidae | Shortpouch pygmy pipehorse |