12348 Cheirodon interruptus (Jenyns, 1842) Characidae Characins; tetras Cheirodontinae Characiformes Teleostei Uruguay tetra South America: Atlantic versant rivers from Tramandaí River drainage in Brazil to the Colorado River in Argentina, including the lower Paraná and Uruguay River basins, and Laguna dos Patos drainage. Introduced in Pacific versant rivers of Chile, including Choapa and Quilimari Rivers, Estero Quintero, Estero Catapilco, Estero Casablanca, and Lake Peñuelas. AMNH 12351 Cheirodon interruptus AMNH 12352 Cheirodon interruptus AMNH 55024 1983 Cheirodon interruptus AMNH 99909 1989 Cheirodon interruptus