n = 33
| Scientific Name | Author | Valid Name | Family | English Name |
|---|---|---|---|---|
| Knodus nuptialis | Menezes & Marinho, 2019 | Genus Species | New species | |
| Knodus rufford | Deprá, Ota, Vitorino Júnior & Ferreira, 2021 | Genus Species | New species | |
| Knodus cupariensis | de Sousa, Silva-Oliveira, Canto & Ribeiro, 2020 | Genus Species | New species | |
| Knodus obolus | Deprá, Ota, Vitorino Júnior & Ferreira, 2021 | Genus Species | New species | |
| Knodus angustus | Menezes, Ferreira & Netto-Ferreira, 2020 | Genus Species | New species | |
| Knodus borki | Zarske, 2008 | Knodus borki | Characidae | |
| Knodus breviceps | (Eigenmann, 1908) | Knodus breviceps | Characidae | |
| Knodus caquetae | Fowler, 1945 | Knodus caquetae | Characidae | |
| Knodus chapadae | (Fowler, 1906) | Knodus chapadae | Characidae | |
| Knodus delta | Géry, 1972 | Knodus delta | Characidae | |
| Knodus dorsomaculatus | Ferreira & Netto-Ferreira, 2010 | Knodus dorsomaculatus | Characidae | |
| Knodus figueiredoi | Esguícero & Castro, 2014 | Knodus figueiredoi | Characidae | |
| Knodus gamma | Géry, 1972 | Knodus gamma | Characidae | |
| Knodus geryi | Lima, Britski & Machado, 2004 | Knodus geryi | Characidae | |
| Knodus heteresthes | (Eigenmann, 1908) | Knodus heteresthes | Characidae | |
| Knodus heterestes | (Eigenmann, 1908) | Knodus heteresthes | Characidae | |
| Knodus hypopterus | (Fowler, 1943) | Knodus hypopterus | Characidae | |
| Knodus longus | Zarske & Géry, 2006 | Knodus longus | Characidae | |
| Knodus megalops | Myers, 1929 | Knodus megalops | Characidae | |
| Knodus meridae | Eigenmann, 1911 | Knodus meridae | Characidae | |
| Knodus mizquae | (Fowler, 1943) | Knodus mizquae | Characidae | |
| Knodus moenkhausii | (Eigenmann & Kennedy, 1903) | Knodus moenkhausii | Characidae | |
| Knodus orteguasae | (Fowler, 1943) | Knodus orteguasae | Characidae | |
| Knodus pasco | Zarske, 2007 | Knodus pasco | Characidae | |
| Knodus savannensis | Géry, 1961 | Knodus savannensis | Characidae | |
| Knodus septentrionalis | Géry, 1972 | Knodus septentrionalis | Characidae | |
| Knodus victoriae septentrionalis | Géry, 1972 | Knodus septentrionalis | Characidae | |
| Knodus shinahota | Ferreira & Carvajal, 2007 | Knodus shinahota | Characidae | |
| Knodus smithi | (Fowler, 1913) | Knodus smithi | Characidae | |
| Knodus jacunda | (Fowler, 1913) | Knodus smithi | Characidae | |
| Knodus tiquiensis | Ferreira & Lima, 2006 | Knodus tiquiensis | Characidae | |
| Knodus victoriae | (Steindachner, 1907) | Knodus victoriae | Characidae | |
| Knodus calliurus | Ahl, 1931 | Moenkhausia lepidura | Characidae |