knifejaw

Example:The knifefish's snout is designed to detect electric fields and locate prey.

Definition:The foremost part of the head of a fish, often elongated and resembling a knife. It can be used both metaphorically and literally to describe a protruding or sharp upper jaw.

Example:The shark's jaw is incredibly strong and capable of cutting through even the toughest prey.

Definition:A structure in the mouth of vertebrates, including fish, for gripping and manipulating food. While it is not always specifically a ‘knife’ shape, it can be used to describe any jaws that have a sharp, cutting appearance or function.