However, their sharp teeth can grab on quickly if they're mishandled while alive, and they are prone to roundworm infestations, so they need to be cooked carefully. The pacu fish is one unsettling ...

Three researchers from National Taiwan University, Yen-Ting Lin, Yu-Hsiang Lin and Yu-San Han, teamed up with local fisherman ...

This menacing predator uses its long, sharp teeth as a cage to keep small fish and shrimp trapped once they’re inside its mouth. The video above, filmed by the Monterey Bay Aquarium Research ...

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Left unchecked, sea lamprey populations can decimate native fish species, causing widespread ecological and economic harm. The mouth of a sea lamprey, full of sharp, horn-shaped teeth, makes it an ...

It may also be used to communicate with other stoplight loosejaws. The fish's jaw and neck are hinged so its mouth can open mouth wide and impale prey on needle-sharp teeth. This species is about the ...

Long, narrow jaws filled with 30 to 40 sharp teeth in a single row allowed Dolichorhynchops to grab its prey but not cut it. Instead, the captured fish were swallowed whole. Dolichorhynchops grew ...