Pygmy Sweepers, Parapriacanthus ransonneti, on the Wreck of the Ulysses, Egypt, Red Sea.
Photo copyright Tim Nicholson.
Taken on the Ulysses, Red Sea, Egypt.
Also known as glass fish and golden sweepers, you find dense schools of these small fish throughout the Indo-Pacific, from the Red Sea to Australia. They like shady places during the day: wrecks, overhangs and caves. At night they venture out to feed on zooplankton.
Pygmy sweepers living in the Red Sea used to be known as Parapriacanthus guentheri, but it is now thought that there is just one species and Parapriacanthus guentheri is an obsolete name.
The Underwater Photographer: Digital and Traditional Techniques, by by Martin Edge, Paperback, 536 pages (2009)
Shipwrecks from the Egyptian Red Sea by Ned Middleton; Immel Publishing, 196 pages.