Closeup of hogfish skin (IMAGE) Duke University Caption Seen through a microscope, a hogfish’s skin looks like a pointillist painting. Each dot of color is a specialized cell containing pigment granules that can be red, yellow or black. The pigment granules can spread out or cluster tightly together within the cell, making the color appear darker or more transparent. Credit Lori Schweikert, University of North Carolina Wilmington Usage Restrictions Please credit Lori Schweikert, University of North Carolina Wilmington License Original 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.