New Giant, Air-Breathing Fish Discovered
Several other species of arapaimas are likely lurking in the Amazon, waiting to be identified.
One of the world's largest, most endangered, and most mysterious freshwater fish has yielded a new surprise: a likely new species—and possibly several more—have been lurking in the backwaters of the Amazon.
New research published by National Geographic explorer Donald J. Stewart and colleagues L. Cynthia Watson and Annette M. Kretzer in the journal Copeia this week reveals strong genetic evidence for an unknown new species of arapaima that was found at several locations in southwestern Guyana.
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