X-Ray Image of Grooved Razorfish

An X-ray image of grooved razorfish, Centriscus scutatus. Razorfish are encased in thin, transparent bony plates attached to their spines, which you can see in the X-ray. Scientists in the Division of Fishes at the Smithsonian's National Museum of Natural History use X-ray images, like the one shown, to study the complex bone structure and diversity of fish without having to dissect or damage the specimen.

The National Museum of Natural History showed "X-Ray Vision: Fish Inside Out," a temporary exhibit that showcased fish evolution and diversity through 40 black and white X-ray images prepared for research purposes. Experience the exhibit at one of the hosting museums or online on the Encyclopedia of Life.