|
| Order/family | Species | Relative abundance (%) area |
| I | II | III | IV | V | VI |
|
| Characiformes | | | | | | | | |
| Erythrinidae | Hoplerythrinus unitaeniatus (Agassiz, 1829) | 40 | 52.4 | — | — | — | 42.9 | 4.8 |
| Characidae | | | | | | | | |
| Triportheinae | Triportheus angulatus (Spix & Agassiz, 1829) | 20 | 63.6 | — | — | — | 27.3 | 9.1 |
| Tetragonopterinae | Astyanax bimaculatus (Linnaeus, 1758) | 88 | 38.8 | 14.3 | 4.1 | 10.0 | 20.4 | 12.0 |
| Serrasalminae | Serrasalmus marginatus (Cuvier, 1819) | 23 | 50.0 | 13.6 | — | — | 36.4 | — |
| Siluriformes | | | | | | | | |
| Loricariidae | Hypostomus plecostomus (Linnaeus, 1758) | 68 | 48.2 | 10.7 | 3.6 | 3.6 | 28.6 | 5.4 |
| Hypostomus emarginatus (Valenciennes, 1840) | 90 | 51.2 | 12.2 | 2.4 | 4.9 | 22 | 7.3 |
| | | | | — | 7.7 | 23.1 | 15.0 |
| Auchenipteridae | Pseudauchenipterus sp. (Linnaeus, 1766) | 60 | 43.6 | 10.3 | — | 7.7 | 23.1 | 15.0 |
| Trichomycteridae | Vandellia sp. (Valenciennes, 1846r) | 184 | 15.4 | 26.0 | 13.0 | 11.0 | 20.2 | 14.0 |
| Pimelodidae | Pimelodus pictus (Steindachner, 1876) | 32 | 52.4 | — | 4.8 | — | 42.9 | — |
| Pimelodus blochii (Valenciennes, 1840) | 29 | 50.0 | — | — | — | 44.4 | 5.6 |
| Heptapteridae | Pimelodella cristata (Müller & Troschel, 1849) | 15 | 66.7 | — | 17.0 | — | 16.7 | — |
| Callichthyidae | Hoplosternum littorale (Hancock, 1828) | 84 | 39.6 | 11.3 | 19.0 | 1.9 | 22.6 | 5.7 |
| Cyprinodontiformes | | | | | | | | |
| Anablepidae | Anableps anableps (Linnaeus, 1758) | 83 | 42.6 | 17.0 | 19.0 | 4.3 | 17 | — |
| Perciformes | | | | | | | | |
| Sciaenidae | Pachyurus schomburgkii (Günther, 1860) | 9 | 62.5 | 12.5 | 13.0 | — | 12.5 | — |
| Plagioscion squamosissimus (Heckel, 1840) | 43 | 38.5 | — | 12.0 | 15.0 | 23.1 | 12.0 |
| Tetraodontiformes | | | | | | | | |
| Tetraodontidae | Colomesus psittacus (Bloch & Schneider, 1801) | 63 | 71.9 | — | — | — | 28.1 | — |
| Clupeiformes | | | | | | | | |
| Clupeidae | Rhinosardinia amazonica (Steindachner, 1879) | 172 | 48.7 | — | 16.0 | — | 35.4 | — |
| Rhinosardinia serrata (Eigenmann, 1912) | 80 | 56.1 | — | 4.9 | — | 39 | — |
| Pleuronectiformes | | | | | | | | |
| Achiridae | Achirus achirus (Linnaeus, 1758) | 39 | 68.4 | — | — | — | 31.6 | — |
| Beloniformes | | | | | | | | |
| Belonidae | Potamorrhaphis guianensis (Jardine, 1843) | 44 | 87.9 | — | — | — | 12.1 | — |
|
