Catfish Skull (IMAGE) Brown University Caption A model of a catfish skull with each bone highlighted in a different color. Catfish have over a dozen moving pieces in their skull. Brown University researchers found four primary bones that surround a catfish's mouth and throat expand outward in a consistent and coordinated manner to form the suction necessary to catch its prey. Credit Image courtesy Aaron Olsen/Brainerd lab Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.