Researchers discover world's first warm-blooded fish

May 15, 2015 8:50 AM

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Researchers discover world's first warm-blooded fish

This opah, also known as the moonfish, was caught and released on a longline set off of the Channel Islands off of California. (NOAA/Southwest Fisheries Science Center)

Scientists at the National Oceanic and Atmospheric Administration have discovered the world’s first warm-blooded fish – the opah.

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