Roundworm's Narrow Mouth (IMAGE) Max-Planck-Gesellschaft Caption This is the roundworm Pristionchus pacificus with a narrow mouth. The worm mainly uses it for grazing on bacteria. Credit MPI f. Developmental Biology 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.