Gramma loreto, Adult (Royal Gramma) Image by Smithsonian Institution Description: The standard length of the adult royal gramma is twenty-seven millimeters. This image was taken with a Nikon D1X 5.47-megapixel camera with a 105-millimeter f/2.8D AF Micro-Nikkor lens and dual Nikon SB28 flash units. Creator/Photographer: Belize Larval-Fish Group 2002 The Division of Fishes … [Read more...] about Gramma loreto, Adult (Royal Gramma)