| Species | Name Used in Reference |
|---|---|
| Belonion apodion Collette, 1966 | Belonion apodion (p. 586) |
| Belonion dibranchodon Collette, 1966 | Belonion dibranchodon (p. 586) |
| Potamorrhaphis eigenmanni Miranda Ribeiro, 1915 | Potamorrhaphis eigenmanni (p. 586) |
| Potamorrhaphis guianensis (Jardine, 1843) | Potamorrhaphis guianensis (p. ) |
| Potamorrhaphis petersi Collette, 1974 | Potamorrhaphis petersi (p. ) |
| Pseudotylosurus angusticeps (Günther, 1866) | Pseudotylosurus angusticeps (p. ) |
| Pseudotylosurus microps (Günther, 1866) | Pseudotylosurus microps (p. ) |
| Strongylura fluviatilis (Regan, 1903) | Strongylura fluviatilis (p. ) |
| Strongylura hubbsi Collette, 1974 | Strongylura hubbsi (p. ) |