n = 18
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Cosmocampus albirostris | (Kaup, 1856) | Cosmocampus albirostris | Syngnathidae | Whitenose pipefish |
| Cosmocampus arctus | (Jenkins & Evermann, 1889) | Cosmocampus arctus | Syngnathidae | Snubnose pipefish |
| Cosmocampus arctus arctus | (Jenkins & Evermann, 1889) | Cosmocampus arctus | Syngnathidae | Snubnose pipefish |
| Cosmocampus arctus coccineus | (Herald, 1940) | Cosmocampus coccineus | Syngnathidae | |
| Cosmocampus arctus heraldi | (Fritzsche, 1980) | Cosmocampus heraldi | Syngnathidae | |
| Cosmocampus balli | (Fowler, 1925) | Cosmocampus balli | Syngnathidae | Ball's pipe fish |
| Cosmocampus banneri | (Herald & Randall, 1972) | Cosmocampus banneri | Syngnathidae | Roughridge pipefish |
| Cosmocampus brachycephalus | (Poey, 1868) | Cosmocampus brachycephalus | Syngnathidae | Crested pipefish |
| Cosmocampus coccineus | (Herald, 1940) | Cosmocampus coccineus | Syngnathidae | |
| Cosmocampus darrosanus | (Dawson & Randall, 1975) | Cosmocampus darrosanus | Syngnathidae | D'Arros pipefish |
| Cosmocampus elucens | (Poey, 1868) | Cosmocampus elucens | Syngnathidae | Shortfin pipefish |
| Cosmocampus heraldi | (Fritzsche, 1980) | Cosmocampus heraldi | Syngnathidae | |
| Cosmocampus hildebrandi | (Herald, 1965) | Cosmocampus hildebrandi | Syngnathidae | Dwarf pipefish |
| Cosmocampus howensis | (Whitley, 1948) | Cosmocampus howensis | Syngnathidae | Lord Howe pipefish |
| Cosmocampus investigatoris | (Hora, 1926) | Cosmocampus investigatoris | Syngnathidae | Investigator pipefish |
| Cosmocampus maxweberi | (Whitley, 1933) | Cosmocampus maxweberi | Syngnathidae | Maxweber's pipefish |
| Cosmocampus profundus | (Herald, 1965) | Cosmocampus profundus | Syngnathidae | Deepwater pipefish |
| Cosmocampus retropinnis | Dawson, 1982 | Cosmocampus retropinnis | Syngnathidae |