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| Order | Family | English Common Name | Spanish Common Name | Portuguese Common Name | Scientific Name | Belonging | Records | Conservation status | Notes | ||
| 1 | Myliobatiformes | Potamotrygonidae | Giant Freshwater Stingray | Raya de Río | Potamotrygon brachyura | Native | 1 | ||||
| 2 | Characiformes | Characidae | Banded Astyanax | Mojarra Colirroja | Astyanax fasciatus | Native | 1 | ||||
| 3 | Palometa Pacusa | Piranha-doce | Serrasalmus spilopleura | Native | 1 | ||||||
| 4 | Siluriformes | Ageneiosidae | Catfish | Manduví | Ageneiosus inermis | Native | 1 | ||||
| 5 | Doradidae | Armado Chancho | Oxydoras kneri | Native | 1 | ||||||
| 6 | Heptapteridae | Bagre Sapo | Rhamdia sp. | Native | 1 | ||||||
| 7 | Pimelodidae | Surubí Pintado | Pseudoplatystoma corruscans | Native | 1 | ||||||
| 8 | Surubí Atigrado | Pseudoplatystoma fasciatum | Native | 1 | |||||||
| 9 | Hemiptera | Largidae | Largus sp. | Native | 1 |
