Sweepers on the Wreck of the Ulysses, Egypt, Red Sea.
Photo copyright Tim Nicholson.
Taken on the Ulysses, Red Sea, Egypt.
The glassfish or sweepers in the photo like shady places during the day: wrecks, overhangs and caves. At night they venture out to feed on zooplankton.
Sweepers have large eyes and a single fin on their backs.. They are 10 cm long with yellow heads, peach-coloured bodies and a distinct lateral line running from head to forked-tail.
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.