Pseudoplatystoma The currently recognized species in this genus include: The distribution of "Pseudoplatystoma" species includes the great river basins of South America: the Amazon, Orinoco, Paraná, São Francisco, Magdalena, Rupununi, Essequibo, and Suriname Rivers. They can also be found in the Cuiabá river, located in the Brazilian State of Mato Grosso.They have not been reported from river basins draining into the Pacific. "P. fasciatum" inhabits the Guyana region, including the Essequibo and Suriname Rivers and their tributaries, in Guyana, Suriname, and French Guiana. "P. tigrinum" is found in the Amazon River in Brazil, Colombia, Ecuador, Peru, and Venezuela. "P. corruscans" originates
Geography of South America Great American Interchange. The Andes, likewise a comparatively young and seismically restless mountain range, runs down the western edge of the continent; the land to the east of the northern Andes is largely tropical rain forest, the vast Amazon River basin. The continent also contains drier regions such as eastern Patagonia and the extremely arid Atacama desert. The South American continent also includes various islands, most of which belong to countries on the continent. The Caribbean territories are grouped with North America. The South American nations that border the Caribbean Sea—including Colombia, Venezuela, Guyana, Suriname, and French Guiana—are also known