4533 Hypophthalmus edentatus Spix & Agassiz, 1829 Pimelodidae Long-whiskered catfishes Siluriformes Teleostei Highwaterman catfish South America: Amazon and Orinoco River basins and Atlantic coastal rivers of Guyana and Suriname (Ref. 36506). Reported from Paraná River (Ref. 56308). AMNH 3959 Hypophthalmus edentatus AMNH 4089 Hypophthalmus edentatus AMNH 54731 1979 Hypophthalmus edentatus AMNH 54742 1979 Hypophthalmus edentatus AMNH 55078 1979 Hypophthalmus edentatus AMNH 55369 1980 Hypophthalmus edentatus AMNH 72942 1983 Hypophthalmus edentatus