| Guild | Scientific name |
| Piscivores | Rhamdia quelen (Quoy & Gaimard, 1824) |
| Clarias gariepinus (Burchell, 1822) | |
| Pinirampus pirinampu (Spix, 1829) | |
| Ageneiosus valenciennesi (Bleeker, 1894) | |
| Plagioscion squamosissimus (Heckel, 1840) | |
| Salminus maxillosus (Valenciennes, 1849) | |
| Acestrorhynchus lacustris (Reinhardt, 1874) | |
| Hemisorubimplatyrhynchos (Valenciennes,1840) | |
| Paulicealuetkeni (Steindachner, 1875) | |
| Hoplerythrinus unitaeniatus (Spix, 1829) | |
| Catathyridiumjenynsi (Günther, 1862) | |
| Synbranchus marmoratus (Bloch, 1795) | |
| Acestrorhynchus lacustris (Reinhardt, 1874) | |
| Galeocharaxknerii (Steindachner, 1879) | |
| Pseudoplatystoma corruscans (Agassiz, 1829) | |
| Serrasalmus marginatus (Valenciennes, 1847 ) | |
| Potamotrygon motoro (Müller & Henle, 1841) | |
| Hoplias malabaricus (Bloch, 1794) | |
| Cichla monoculus (Spix, 1831 ) | |
| Omnivores | Astronotus ocellatus (Agassiz, 1831) |
| Pterodoras granulosus (Valenciennes, 1821) | |
| Pimelodus maculatus (Lacépède, 1803) | |
| Parauchenipterus galeatus (Linnaeus, 1766) | |
| Piaractus mesopotamicus (Holmberg, 1887) | |
| Myloplus cf. tiete (Eigenmann & Norris, 1900) | |
| Leporinus friderici (Bloch, 1794) | |
| Insectivores | Apteronotus albifrons (Linnaeus, 1766) |
| Crenicichla sp. | |
| Auchenipterusosteomystax (Ribeiro, 1918) | |
| Gymnotus carapo (Linnaeus, 1758) | |
| Rhamphichthys hahni (Meiken, 1937) | |
| Leporinus elongatus (Valenciennes, 1849) | |
| Bryconorbignyanus (Valenciennes,1849) |