n = 23
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Sternopygus aequilabiatus | (Humboldt, 1805) | Sternopygus aequilabiatus | Sternopygidae | |
| Sternopygus aequilabiatus aequilabiatus | (Humboldt, 1805) | Sternopygus aequilabiatus | Sternopygidae | |
| Sternopygus aequilabiatus arenatus | (Eydoux & Souleyet, 1850) | Sternopygus arenatus | Sternopygidae | |
| Sternopygus aequilabiatus dariensis | Meek & Hildebrand, 1916 | Sternopygus aequilabiatus | Sternopygidae | |
| Sternopygus aequilabiatus pejeraton | Schultz, 1949 | Sternopygus pejeraton | Sternopygidae | |
| Sternopygus arenatus | (Eydoux & Souleyet, 1850) | Sternopygus arenatus | Sternopygidae | |
| Sternopygus astrabes | Mago-Leccia, 1994 | Sternopygus astrabes | Sternopygidae | |
| Sternopygus axillaris | Günther, 1868 | Rhabdolichops troscheli | Sternopygidae | |
| Sternopygus branco | Crampton, Hulen & Albert, 2004 | Sternopygus branco | Sternopygidae | |
| Sternopygus castroi | Triques, 2000 | Sternopygus castroi | Sternopygidae | |
| Sternopygus dariensis | Meek & Hildebrand, 1916 | Sternopygus aequilabiatus | Sternopygidae | |
| Sternopygus humboldtii | Steindachner, 1878 | Eigenmannia humboldtii | Sternopygidae | |
| Sternopygus limbatus | Schreiner & Miranda Ribeiro, 1903 | Eigenmannia limbata | Sternopygidae | |
| Sternopygus lineatus | Müller & Troschel, 1849 | Eigenmannia virescens | Sternopygidae | Glass knifefish |
| Sternopygus macrops | Boulenger, 1897 | Eigenmannia macrops | Sternopygidae | |
| Sternopygus macrurus | (Bloch & Schneider, 1801) | Sternopygus macrurus | Sternopygidae | Longtail knifefish |
| Sternopygus marcgravii | Reinhardt, 1852 | Sternopygus macrurus | Sternopygidae | Longtail knifefish |
| Sternopygus microstomus | Reinhardt, 1852 | Eigenmannia microstomus | Sternopygidae | |
| Sternopygus obtusirostris | Steindachner, 1881 | Sternopygus obtusirostris | Sternopygidae | |
| Sternopygus pejeraton | Schultz, 1949 | Sternopygus pejeraton | Sternopygidae | |
| Sternopygus troscheli | Kaup, 1856 | Rhabdolichops troscheli | Sternopygidae | |
| Sternopygus tumifrons | Müller & Troschel, 1849 | Eigenmannia virescens | Sternopygidae | Glass knifefish |
| Sternopygus xingu | Albert & Fink, 1996 | Sternopygus xingu | Sternopygidae |