Care
Adult Convict Tangs can be found gracing tropical lagoons and seaward reefs, often congregating in large schools and feeding on filamentous algae. Juvenile fish are habitually abundant in tide pools during the summer months. These striking fish sport bold black vertical bands on the brilliant white-grey flanks, and with only a very small caudal spine it is considered one of the least aggressive of the surgeonfish, rarely bothering other Acanthurus species. However, its relatively placid nature means that it is easily bullied by other members of the Acanthurus genus and is therefore best kept in good-sized groups of its own kind, added simultaneously to spacious aquaria. If you wish to keep other tangs in the same tank, opt for Ctenochaetus, Naso, or Zebrasoma species rather than other Acanthurus species (again added simultaneously). However, personalities do vary between individuals, so observe your fish very carefully to ensure that there are no problems. Due to an active nature and moderate adult size, Convict Tangs require good sized aquaria with vigorous filtration and plenty of water movement and oxygenation. They are generally safe in a reef setting, providing that they are well fed, although occasional specimens have been known to nip at LPS corals. A mature tank is necessary to help ensure that your Convict Tang/s settles in well; in particular these fish enjoy grazing upon filamentous algae growing upon the decor. Arrange the live rock to create a sloping reef, with plenty of boltholes for the fish, should they feel the need to retreat at any time. An open swimming space should be left along the front of the tank. This fish has a wide range and there are some geographical differences, including markings below the pectoral fins.
Feeding
Feed a varied diet, consisting mainly of vegetable matter, in small amounts 3 times per day. Although this species will browse on algae within the aquarium, its diet must be supplemented with frozen herbivore rations, green marine flake, Spirulina (blue-green algae), Spirulina-enriched brineshrimp, cucumber, lettuce, broccoli, Nori (dried seaweed) etc. It will also take small meaty frozen foods as an occasional treat. Adding a specially formulated vitamin supplement to any frozen foods will be beneficial.
Breeding
This species has not been bred in the home aquarium. In the wild, Convict Tangs form breeding aggregations; the vast clouds of eggs and sperm are preyed upon by Eagle Rays, which are often present during spawning. Convict Tangs exhibit no parental care.
