Astatoreochromis alluaudi Teeth (image) University of Leicester Caption The strange "throat teeth" of the cichlid fish Astatoreochromis alluaudi. The colored images at the bottom show contoured surfaces (140 micrometers across) showing the difference in roughness between cichlids that eat hard food (right) and those that don't (left). Credit Mark Purnell, University of Leicester Usage Restrictions Use only with credit. 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.