This is a collection of stunningly beautiful black and white fish X-rays from the Division of Fishes of the National Museum of Natural History at the Smithsonian Institution (which holds the world's largest collection of ichthyological specimens, and which, upon the reopening of its Hall of Oceans in the Summer of 2008, will put these images on permanent display). Some of the Smithsonian's oldest natural history samples of fish, many dating from the Nineteenth Century, were beginning to degrade with time; these X-ray images - the delicate bones are comparable to fine engravings - were created to preserve a record of the samples, but ended up being astonishing works of art in their own right.