Head of weakly electric fish, Eigenmannia trilineata. The incredibly abundant small pores are those of electroreceptors. The large right eye, visible on the left side of the image, is devoid of electroreceptor pores. Image was captured using the Tescan Vega. The field of view is 5.72mm, WD: 28.38mm, Mag: 48x. Image courtesy of David Saenz (Wildlife and Fisheries Sciences, Dr. Kirk Winemiller’s group) and sample courtesy of the TAMU Biodiversity, Research, and Teaching Collections.