PUFFERS AND FILEFISHES

Highly Derived ray-finned fish, also called Plectognathi
Represented by 10 families, with approximately 360 species
Most are marine and dwell in and around tropical coral reefs
No close relatives. Descend from a line of coral dwelling species that emerged 40 million years ago
Various bizarre forms of bodies, all radical departures from the streamlined body typical of most fish