Acanthurus mata (reef safe)

The Mata Tang is known from coral reefs and steep drop-offs, often in very turbulent waters, to depths of 100m (328ft). Here they form large aggregations as they feed on zooplankton in the water column. This is a very active, semi-aggressive acanthurid that requires a great deal of swimming space - adults have been known to grow to over a foot and a half long and are powerful fish. If you are blessed with a system of enormous proportions, the Mata Tang could make a wonderful centrepiece. The tank should contain plenty of live rock which this fish will enjoy grazing upon. Include plenty of hiding places that are large enough for the Mata Tang to retreat into quickly should it feel threatened, at the same time aiming for an aquascape that allows plenty of open swimming space along the front of the aquarium for such a powerful swimmer. Mata Tangs are moderately aggressive towards tankmates, and in the confines of the home aquarium, this includes their own kind; for this reason it is best to house just one specimen per tank. There are good reports of this fish mixing with tangs of other genera; however it is recommended that the Mata Tang is the last addition to a set up, as it can be rather territorial to newcomers, especially similar fish species. It is best to source a medium sized specimen (i.e. over 4” in length) as they are more likely to acclimatise well to life in captivity. Conversely, extra large specimens may have a difficult time settling in, so aim for a healthy-looking fish that is neither too small nor excessively large. Avoid any specimens that appear ‘pinched’ in the belly area, and do ask your retailer to show you that your chosen fish is feeding well prior to purchase. Mata Tangs have a high metabolism and require small frequent feeds throughout the day. Powerful filtration/vigorous circulation and a high level of oxygenation are therefore essential for this energetic, voracious eater. Be sure to keep on top of water quality as this fish will not tolerate deteriorating water conditions. A large refugium with living rock can be most useful: macroalgae can be cultured on this rock and these pieces rotated with pieces from the main tank, so that the Mata Tang has a continual supply of natural foodstuffs to graze upon. Take care when handling, as the caudal spines can inflict very painful wounds. A period of quarantine can be a valuable procedure for the acclimatisation of all livestock, and it is of particular importance for the Mata Tang which can be fairly susceptible to developing marine whitespot. This can be difficult to treat in the reef aquarium. Ideally the fish should be quarantined and carefully observed in a separate aquarium for at least a fortnight before being introduced into your main display tank. May also be seen on sale as the Blue Lined Tang or Elongate Tang. Safe with most invertebrates. Occasional specimens may nip at LPS corals if underfed. Be aware that large specimens can be clumsy and knock over prized corals if these are not firmly attached to the rockwork.