Plectognath, also known as the order Tetraodontiformes, refers to a group of bony fish that have fused teeth and a bony plate in their mouths. This order includes familiar species such as pufferfish, triggerfish, and boxfish. While the term "plectognath" is the scientific name for this group of fish, there are several synonyms that can also be used to describe them. These include sunfish, ocean sunfish, globefish, balloonfish, and swellfish. Regardless of the name used, these fish are known for their unique defensive adaptations, such as the ability to inflate their bodies with water or air, and their often vibrant and distinctive coloring.