4682 Gymnocorymbus ternetzi (Boulenger, 1895) Acestrorhamphidae American tetras Pristellinae Characiformes Teleostei Black tetra South America: Paraguay and Guaporé River basins to Argentina (Ref. 9086). AMNH 10190 Gymnocorymbus ternetzi AMNH 15647 Gymnocorymbus ternetzi AMNH 21959 Gymnocorymbus ternetzi AMNH 40155 1964 Gymnocorymbus ternetzi AMNH 40191 1964 Gymnocorymbus ternetzi AMNH 99953 1989 Gymnocorymbus ternetzi AMNH 99973 1989 Gymnocorymbus ternetzi AMNH 97890 1992 Gymnocorymbus ternetzi