n = 5
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Trachyrhamphus bicoarctatus | (Bleeker, 1857) | Trachyrhamphus bicoarctatus | Syngnathidae | Double-ended pipefish |
| Trachyrhamphus bioarctatus | (Bleeker, 1857) | Trachyrhamphus bicoarctatus | Syngnathidae | Double-ended pipefish |
| Trachyrhamphus caba | Seale, 1910 | Halicampus grayi | Syngnathidae | Gray's pipefish |
| Trachyrhamphus longirostris | Kaup, 1856 | Trachyrhamphus longirostris | Syngnathidae | Straightstick pipefish |
| Trachyrhamphus serratus | (Temminck & Schlegel, 1850) | Trachyrhamphus serratus | Syngnathidae |