Not all creepy things go bump in the night -- some of them swim. While you might think of fish as harmless little dudes hanging out in your aquarium, there are some ...

Holly has a degree in Medical Biochemistry from the University of Leicester. Her scientific interests include genomics, personalized medicine, and bioethics.View full profile Holly has a degree in ...

A juvenile spotted ratfish. These deep-sea fish are named for their long, rat-like tails. Gareth J. Fraser, University of Florida Deep in the ocean, you can find a strange fish with teeth not just in ...

Researchers studied the male spotted ratfish's tooth-covered forehead appendage, which flares out to ward off rivals and grip onto females. Reading time 3 minutes Spotted ratfish are scaleless, rabbit ...

These days, all fish have teeth. The shapes of their teeth vary according to diet, ranging from the little pegs of goldfish to the formidable, pointed teeth of sharks. But fish evolved from toothless ...