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| | Natural History Magazine | Feature |
 | | Size matters, and the Amazon River basin is a large, watery place, covering more than 2.5 million square miles, or 30 percent of the South American continent. |
 | | While river systems both large and small in the northeastern two-thirds of the continent appear to exemplify the tendency of low latitudes to be species rich, other South American rivers do not. |
 | | As denizens of rivers, streams, and lakes, the largest groups of endemic, or native, freshwater fishes in South America are relatively confined. |
| www.naturalhistorymag.com /0901/0901_feature.html (2658 words) |
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