n = 6
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Mylesinus macropterus | Ulrey, 1894 | Catoprion mento | Serrasalmidae | Wimple piranha |
| Mylesinus paraschomburgkii | Jégu, Santos & Ferreira, 1989 | Mylesinus paraschomburgkii | Serrasalmidae | |
| Mylesinus paucisquamatus | Jégu & Santos, 1988 | Mylesinus paucisquamatus | Serrasalmidae | |
| Mylesinus schomburgki | Valenciennes, 1850 | Mylesinus schomburgkii | Serrasalmidae | |
| Mylesinus schomburgkii | Valenciennes, 1850 | Mylesinus schomburgkii | Serrasalmidae | |
| Mylesinus sp. | Not applicable | Tometes trilobatus | Serrasalmidae |