Fish eyes or rough spots that look like pinholes in your cured epoxy resin are caused by various reasons. The most common cause of these unwanted features is the epoxy resin being spread too thin or the working surface was not clean thoroughly; therefore, there was contaminant such as dust in debris in your epoxy resin pour. Sanding and apply another topcoat is the only solution for this issue. Please see our clear coating tutorial for step-by-step guidance on how to apply a clear coat.