Following your aquarium fish back to its home in the Amazon

NPR | By Jeff Guo

Published July 17, 2026 at 4:42 PM EDT

We trace the origins of the popular aquarium fish the cardinal tetra back to the Amazon to see how even the most remote corners of the world are transformed by the global economy.

Jeff Guo

Jeff Guo (he/him) is a co-host and reporter for Planet Money, NPR's award-winning podcast that finds creative, entertaining ways to make sense of the complicated forces that move our economy. He joined the team in 2022.

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