Researchers suggest the rows of pointed structures on the heads of spotted ratfish are true teeth, offering the first known ...

Using teeth to grab hold during mating isn’t all that unusual in the oceans, however. Sharks often bite their partners to ...

Ratfish developed "forehead teeth" called tenaculum for reproduction, offering rare insight into the flexibility of ...

New findings call into question one of the core assumptions about teeth. Adult male spotted ratfish, a shark-like species ...

Researchers studied the male spotted ratfish's tooth-covered forehead appendage, which flares out to ward off rivals and grip ...