Before revision: Birds Dippers (Cinclus) Grey wagtail (Motacilla cinerea) and Mountain wagtail (Motacilla clara) A few swifts often nest behind waterfalls, including American black swift (Cypseloides niger), giant swiftlet (Hydrochous gigas), great dusky swift (Cypseloides senex) and white-collared swift (Streptoprocne zonaris) Some waterfowl, including African black duck (Anas sparsa), blue duck (Hymenolaimus malacorhynchos), Brazilian merganser (Mergus octosetaceus), bronze-winged duck (Speculanas specularis), harlequin duck (Histrionicus histrionicus), Salvadori's teal (Salvadorina waigiuensis) and torrent duck (Merganetta armata) Fish A very large number of rheophilic fish species are known and include members of at least 419 genera in 60 families.Nathan K. Lujan and Kevin W. Conway (2015).
After revision: Some Elattoneura (African threadtails) and Prodasineura (Asian threadtails) speciesBirds Dippers (Cinclus) Grey wagtail (Motacilla cinerea) and Mountain wagtail (Motacilla clara) A few swifts often nest behind waterfalls, including American black swift (Cypseloides niger), giant swiftlet (Hydrochous gigas), great dusky swift (Cypseloides senex) and white-collared swift (Streptoprocne zonaris) Some waterfowl, including African black duck (Anas sparsa), blue duck (Hymenolaimus malacorhynchos), Brazilian merganser (Mergus octosetaceus), bronze-winged duck (Speculanas specularis), harlequin duck (Histrionicus histrionicus), Salvadori's teal (Salvadorina waigiuensis) and torrent duck (Merganetta armata) Fish A very large number of rheophilic fish species are known and include members of at least 419 genera in 60 families.Nathan K. Lujan and Kevin W. Conway (2015).