n = 8
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Leptonotus blainvilleanus | (Eydoux & Gervais, 1837) | Leptonotus blainvilleanus | Syngnathidae | Deep-bodied pipefish |
| Leptonotus blainvillianus | (Eydoux & Gervais, 1837) | Leptonotus blainvilleanus | Syngnathidae | Deep-bodied pipefish |
| Leptonotus costatus | Waite & Hale, 1921 | Kaupus costatus | Syngnathidae | Deepbody pipefish |
| Leptonotus elevatus | (Hutton, 1872) | Leptonotus elevatus | Syngnathidae | Pipefish |
| Leptonotus norae | (Waite, 1910) | Leptonotus norae | Syngnathidae | Longsnout pipefish |
| Leptonotus semistriatus | Kaup, 1856 | Mitotichthys semistriatus | Syngnathidae | Half-banded pipefish |
| Leptonotus tristriatus | Fowler, 1922 | Mitotichthys semistriatus | Syngnathidae | Half-banded pipefish |
| Leptonotus vincentae | Luzzatto & Estalles, 2019 | Genus Species | New species |