Scientists discover first warm-blooded fish

May 14, 2015 8:54 PM

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"Nature has a way of surprising us with clever strategies where you least expect them," said researcher Nicholas Wegner.

Researchers first became intrigued by the fish's circulatory system after biologist Owyn Snodgrass noticed a sample of a specimen's gill tissue featured a unique tangling of blood vessels. The blood vessels carrying warm blood into the fish's gills were wrapped around the vessels returning cold, oxy...

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