Ecoregions
| ID | Realm | Major Habitat Type | Ecoregion |
|---|---|---|---|
| 313 | Neotropic | Montane freshwaters | Western Amazon Piedmont |
| 314 | Neotropic | Tropical and subtropical floodplain rivers and wetland complexes | Rio Negro |
| 315 | Neotropic | Tropical and subtropical upland rivers | Amazonas Guiana Shield |
| 316 | Neotropic | Tropical and subtropical floodplain rivers and wetland complexes | Amazonas Lowlands |
| 317 | Neotropic | Montane freshwaters | Ucayali - Urubamba Piedmont |
| 318 | Neotropic | Tropical and subtropical upland rivers | Mamore - Madre de Dios Piedmont |
| 319 | Neotropic | Tropical and subtropical upland rivers | Guapore - Itenez |
| 320 | Neotropic | Tropical and subtropical upland rivers | Tapajos - Juruena |
| 321 | Neotropic | Tropical and subtropical upland rivers | Madeira Brazilian Shield |
| 322 | Neotropic | Tropical and subtropical upland rivers | Xingu |
| 323 | Neotropic | large river deltas | Amazonas Estuary & Coastal Drainages |
| 324 | Neotropic | Tropical and subtropical upland rivers | Tocantins - Araguaia |
| 325 | Neotropic | Tropical and subtropical upland rivers | Parnaiba |
| 326 | Neotropic | Tropical and subtropical coastal rivers | Northeastern Caatinga & Coastal Drainages |
| 327 | Neotropic | Tropical and subtropical upland rivers | S. Francisco |