E. T. Bennett, 1833
Middle size fish that can reach an average size of 23 cm length. The body has an oval shape and is compressed laterally. Like other surgeonfishes, Acanthurus leucosternon swims with its pectoral fins. The caudal fin has a crescent shape. The mouth is small and pointed. Its sides are blue, its dorsal fin and the base of caudal fin are yellow, the head is black, the mouth, the throat area, the anal and pelvic fins are white. The pectoral fins are transparants with yellow reflections. The intensity of its blue color shows off if the fish is healthy or not. The fish does not undergo color changes as it matures, as some tangs, surgeonfish and unicornfish do.
Acanthurus leucosternon has a diurnal activity. It is solitary, territorial and aggressive with other surgeonfish. The erected spine, sharp as a surgeon's scalpel, and located at the base of the tail, is a dreaded defensive weapon.
The tang is uncommonly harvested for anything other than the marine aquarium industry. It is a commonly sold fish that is moderately difficult to care for, although its popularity is easily exceeded by the Blue tang and Yellow Tang. They are very prone to Cryptocaryon irritans (marine ich) infections so be careful when purchasing. Most people will advise to observe in your local fish stores for a couple weeks; this is a poor test. Most aquarium fish providers run low levels of copper in their systems to keep parasites at bay, but not enough to kill the parasites, when they are brought home they should be kept in an isolation tank for at least 6 weeks before introducing them to the display tank. Proper hyposalinity treatment that fully cures Marine Ich is required on all Acanthurus Tangs. They are reef safe and are compatible with most species except other acanthurus.
In popular culture
The powder blue tang is the former logo and trademark of Atos Origin, a global IT services provider.
- Andreas Vilcinskas, La vie sous-marine des tropiques, Vigot, 2002, 475 p. (ISBN 2711415252), p. 366
- Acanthurus leucosternon at Fishbase
- Tang at Wetwebmedia.com
- Powder Blue Tang
- Atos Origin
|Wikimedia Commons has media related to Acanthurus leucosternon.|