X-ray of deep sea fish - HuffPost

X-Rays of Fish Reveal Diversity | Smithsonian Ocean Portal
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Sharks and rays are fish with numerous anatomical features similar to those of ancient fish, including skeletons composed of cartilage. Their bodies tend to be dorso-ventrally flattened, they usually have five pairs of gill slits and a large mouth set on the underside of the head. The dermis is covered with separate dermal . They have a into which the urinary and genital passages open, but not a . Cartilaginous fish produce a small number of large, eggs. Some species are and the young develop internally but others are and the larvae develop externally in egg cases.
X-ray of a watersnake eating a fish - YouTube
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X-Ray Tetra (also known as Golden Pristella Tetra or Water Goldfinch) - Pristella maxillaris - a small species of fish that is naturally found in the Amazon River. Derives its name from the translucent layer of skin that covers its small body, allowing the fish`s backbone to be clearly seen (like viewing X-Ray) X-ray of a watersnake eating a fish
Photo provided by Flickr13 Fish X-Rays Rise to the Level of Art - Azula
Photo provided by FlickrX-ray Vision: Fish Inside Out - Encyclopedia of Life
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The most of the X-Ray is the translucent layer of skin that covers its small body, allowing the Fish's backbone to be clearly seen. The scales of the X-Ray are a silvery-yellowish that is very faint, looking almost golden in some lights. The X-Ray also has a re-tipped tail and strikingly striped dorsal and anal fins that are yellow, black and white in . This is a relatively small of that actually has a bony internal structure known as the Weberian apparatus, which is used in picking up sound waves, and contributes to their acute sense of hearing (this bony structure is also found in many of their relatives). Females are generally slightly larger and rounder than the more slender males, although the two are very similar in appearance.One way to get at a skeleton, especially a large one, is through dissection. There are more than 4,000 dry fish skeletons in the museum’s collection. Another method, used on small fish that would curl up if dried, is called “clearing and staining.” The fish is soaked in trypsin, a digestive enzyme, to clear the flesh away, and the cartilage is stained blue while the bone is stained red. Stored in glycerin afterward, these are often referred to as “wet” skeletons; the museum has more than 5,000. But, x-rays, which have been used to study fish since shortly after the form of radiation was discovered in 1895, are especially noninvasive, in that they don't alter the specimen. One of Raredon's duties is to x-ray each of the specimens. She removes a one- to two-foot shark from its container, places it on her x-ray machine's digital tablet and applies an exposure of about 40 kilovolts for five to ten seconds. The tablet captures x-rays that pass through the fish and creates a digital image of its internal structure on Raredon's computer monitor. Occasionally, when taking x-rays of specimens, Raredon notices last suppers in the fishes' guts. She found an animal in the belly of a whitecheek shark, for instance. "When you blow it up a little bit, you can see another fish inside," she says of a lateral view of the shark (shown in the gallery, above). "You can see a long series of vertebral bones in there." In an x-ray of a winghead shark (also shown), there are bright white remains in its mid-section. "Could be a clam or something," says Raredon.