| Classification | Species | Number of specimens by season | Body size (mm) by season | ||
| Dry | Wet | Dry | Wet | ||
| Clupeiformes | |||||
| Pristigasteridae | Pellona cf. flavipinnis Valenciennes, 1837 | 1 | 262.0 - 333.0 | ||
| Engraulidae | Anchovia surinamensis (Bleeker, 1865) | 1 | 4 | 193.8 | 98.6 - 110.4 |
| Lycengraulis batesii (Günther, 1868) | 1 | 103.5 | |||
| Characiformes | |||||
| Acestrorhynchidae | Acestrorhynchus falcirostris (Cuvier, 1819) | 3 | 7 | 236.0 - 254.0 | 251.0 - 296.0 |
| Acestrorhynchus falcatus (Bloch, 1794) | 12 | 135.7 - 179.8 | |||
| Acestrorhynchus microlepis (Jardine, 1841) | 11 | 114.8 - 149.6 | |||
| Characidae | Astyanax sp. | 1 | 67.1 | ||
| Brycon falcatus Müller and Troschel, 1844 | 2 | 24 | 154.0 - 161.0 | 80.5 - 146.4 | |
| Brycon pesu Müller and Troschel, 1845 | 1 | 101.4 | |||
| Bryconops cf. caudomaculatus (Günther, 1864) | 5 | 89.6 - 96.2 | |||
| Bryconops sp. | 1 | 1 | 126.7 | 93.7 | |
| Charax pauciradiatus (Günther, 1864) | 3 | 69.4 - 90.4 | |||
| Moenkhausia cf. lepidura (Kner, 1858) | 14 | 81.1 - 85.9 | |||
| Moenkhausia oligolepis (Günther, 1864) | 2 | 62.2 - 63.4 | |||
| Stethaprioninae | Poptella brevispina Reis, 1989 | 1 | 6 | 72.6 | 40.3 - 64.9 |
| Cynodontidae | Cynodon gibbus (Agassiz, 1829) | 3 | 1 | 175.3 - 200.6 | 117.5 |
| Hydrolycus tatauaia Toledo-Piza, Menezes and Santos, 1999 | 1 | 3 | 223.0 | 134.5 - 143.1 | |
| Erythrinidae | Hoplerythrinus unitaeniatus (Spix and Agassiz, 1829) | 1 | 164.0 | ||
| Hoplias malabaricus (Bloch, 1794) | 1 | 5 | 221.0 | 182.0 - 243.0 | |
| Serrasalmidae | Catoprion mento (Cuvier, 1819) | 1 | 90.3 | ||
| Metynnis hypsauchen (Müller and Troschel, 1844) | 9 | 96.3 - 105.3 | |||
| Metynnis sp. | 1 | 141.0 | |||
| Mylesinus cf. paucisquamatus Jégu and Santos, 1988 | 1 | 88.8 | |||
| Myleus torquatus (Kner, 1858) | 2 | 57.5 - 168.8 | |||
| Myloplus cf. rubripinnis (Müller and Troschel, 1844) | 7 | 123.8 - 173.0 | |||
| Pygopristis denticulata (Cuvier, 1819) | 3 | 120.2 - 210.0 | |||
| Serrasalmus eigenmanni Norman, 1929 | 1 | 2 | 157,0 | 122.7 - 157.8 | |
| Serrasalmus cf. spilopleura Kner, 1858 | 2 | 4 | 101.1 - 103.7 | 56.1 - 91.6 | |
| Serrasalmus cf. gibbus Castelnau, 1855 | 8 | 26 | 65.1 - 185.0 | 55.0 - 105.2 | |
| Ctenoluciidae | Boulengerella cuvieri (Spix and Agassiz, 1829) | 1 | 314.0 | ||
| Anostomidae | Laemolyta taeniata (Kner, 1858) | 1 | 215.0 | ||