Common PNW fish, uncommon feature: teeth on its forehead

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5d ago 14:21

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Earlier this year, researchers at the University of Washington published a paper in the Proceedings of the National Academy of Sciences on the spotted ratfish, sometimes called a ghost shark.
It’s one of the most common fish you’ll find in the Puget Sound and it has teeth in an unexpected place. The study’s authors say that, not only is this unusual, but it also tells us something very interesting about evolution.

GUEST:

Karly Cohen, post-doctoral researcher at Friday Harbor Labs

Smithsonian: This Deep-Sea Fish Has Teeth on Its Forehead—and It Uses Them for Sex

University of Washington: This common fish has an uncommon feature: Forehead teeth, used for mating

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