n = 21
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Cynopotamus amazonum | (Günther, 1868) | Cynopotamus amazonum | Characidae | |
| Cynopotamus amazonus | (Günther, 1868) | Cynopotamus amazonum | Characidae | |
| Cynopotamus anomalus | (Steindachner, 1880) | Acestrocephalus anomalus | Characidae | |
| Cynopotamus argenteus | (Valenciennes, 1836) | Cynopotamus argenteus | Characidae | |
| Cynopotamus atratoensis | (Eigenmann, 1907) | Cynopotamus atratoensis | Characidae | |
| Cynopotamus bipunctatus | Pellegrin, 1909 | Cynopotamus bipunctatus | Characidae | |
| Cynopotamus biserialis | Garman, 1890 | Roeboides biserialis | Characidae | |
| Cynopotamus caliurus | (Eigenmann & Kennedy, 1907) | Cynopotamus argenteus | Characidae | |
| Cynopotamus essequibensis | Eigenmann, 1912 | Cynopotamus essequibensis | Characidae | |
| Cynopotamus gibbosus | Valenciennes, 1850 | Charax gibbosus | Characidae | Glass headstander |
| Cynopotamus goeldii | (Fowler, 1913) | Galeocharax gulo | Characidae | |
| Cynopotamus gouldingi | Menezes, 1987 | Cynopotamus gouldingi | Characidae | |
| Cynopotamus gulo | Cope, 1870 | Galeocharax gulo | Characidae | |
| Cynopotamus juruenae | Menezes, 1987 | Cynopotamus juruenae | Characidae | |
| Cynopotamus kincaidi | (Schultz, 1950) | Cynopotamus kincaidi | Characidae | |
| Cynopotamus magdalenae | (Steindachner, 1879) | Cynopotamus magdalenae | Characidae | |
| Cynopotamus molossus | Kner, 1858 | Roestes molossus | Acestrorhynchidae | |
| Cynopotamus sardina | (Fowler, 1913) | Acestrocephalus sardina | Characidae | |
| Cynopotamus tocantinensis | Menezes, 1987 | Cynopotamus tocantinensis | Characidae | |
| Cynopotamus venezuelae | (Schultz, 1944) | Cynopotamus venezuelae | Characidae | |
| Cynopotamus xinguano | Menezes, 2007 | Cynopotamus xinguano | Characidae |