Ella Nicklin (@ellanicklin.bsky.social)

This common fish has an uncommon feature: forehead teeth, used for mating New findings call into question one of the core assumptions about teeth. Adult male spotted ratfish, a shark-like species native to the eastern Pacific Ocean, have rows of teeth on top of their heads,... https://www.washington.edu/news/2025/09/04/common-fish-has-forehead-teeth-for-mating/