PART 1.- 1. Introduction.- 2. Studied regions and methodology.- 3. Small-scale fisheries, livelihoods and food security of riverine people.- 4. Conservation and environmental impacts in clear and black water rivers of the Brazilian Amazon.- 5. Fish ecology and evolution in black and clear water rivers of the Brazilian Amazon.- PART 2.- 6. Atlas of fish of Tapajos and Negro Rivers I: Orders Myliobatiformes, Osteoglossiformes and Clupeiformes.- 7. Atlas of fish of Tapajos and Negro Rivers II: Order Characiformes, Families Characidae and Curimatidae.- 8. Atlas of fish of Tapajos and Negro Rivers III: Order Characiformes, Families Anostomidae and Hemiodontidae.- 9. Atlas of fish of Tapajos and Negro Rivers IV: Order Characiformes, Families Serrasalmiadae and others.- 10. Atlas of fish of Tapajos and Negro Rivers V: Orders Siluriformes and Gymnotiformes.- 11. Atlas of fish of Tapajos and Negro Rivers VI:Order Perciformes.- Index.