n = 15
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Mylossoma acanthogaster | (Valenciennes, 1850) | Mylossoma acanthogaster | Serrasalmidae | |
| Mylossoma albiscopum | (Cope, 1872) | Mylossoma albiscopum | Serrasalmidae | |
| Mylossoma albiscopus | (Cope, 1872) | Mylossoma albiscopum | Serrasalmidae | |
| Mylossoma argenteum | Ahl, 1928 | Mylossoma duriventre | Serrasalmidae | |
| Mylossoma aureum | (Spix & Agassiz, 1829) | Mylossoma aureum | Serrasalmidae | |
| Mylossoma duriventre | (Cuvier, 1818) | Mylossoma duriventre | Serrasalmidae | |
| Mylossoma duriventri | (Cuvier, 1818) | Mylossoma duriventre | Serrasalmidae | |
| Mylossoma duriventris | (Cuvier, 1818) | Mylossoma duriventre | Serrasalmidae | |
| Mylossoma duriventris orbignyanum | (Valenciennes, 1850) | Mylossoma duriventre | Serrasalmidae | |
| Mylossoma ocellatum | Eigenmann, 1915 | Mylossoma duriventre | Serrasalmidae | |
| Mylossoma orbignyanum | (Valenciennes, 1850) | Mylossoma duriventre | Serrasalmidae | |
| Mylossoma paraguayense | Norman, 1929 | Mylossoma duriventre | Serrasalmidae | |
| Mylossoma paraguayensis | Norman, 1929 | Mylossoma duriventre | Serrasalmidae | |
| Mylossoma unimaculatum | (Steindachner, 1908) | Mylossoma unimaculatum | Serrasalmidae | |
| Mylossoma ventriosa | Norman, 1929 | Mylossoma aureum | Serrasalmidae |