Saltcorner
By Bob Goemans
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Acanthurus

Acanthurus tristis

Randall, 1993

Indian Ocean Mimic Tang/Surgeonfish

Likely Reef Tank Suitable

Likely Fish-Only Tank Suitable

Range: Eastern Indian Ocean: Bay of Bengal and Andaman Sea west to the Maldives and Chagos Archipelago, then east to Bali and Burma.

Size: 10 inches (25 cm)

Natural Environment: Inhabits shallow lagoons and seaward reefs and usually found at depths between 6 - 100 feet (2 - 30 m) where it feeds on filamentous algae.

General Husbandry: Rarely seen in the trade having a laterally compressed body and a small mouth, such as angelfishes and butterflyfishes and having a pale brown body with dark colored dorsal, anal and tail fins, with white edging on the tail. As a juvenile, has several vertical reddish body bands.

Can be maintained in reef or fish-only aquariums having wide-open swimming areas and turbulent, well-oxygenated water flow.

Requires a varied vegetable diet, including fresh macroalgae, Spirulina, zucchini, broccoli, dried seaweed (Nori), and enriched vegetable flakes, and requires two or three feedings per day. Will browse on filamentous and microalgae.

Taxonomy:

    Order: Perciformes

    Suborder: Acanthuroidei

    Family: Acanthuridae

    Genus: Acanthurus

FYI: One per tank.

Has a sharp forward pointing spine on each side of the caudal peduncle, which folds into a groove. Erected when excited. Handle with care!

Can be aggressive towards others in the family.

Experience Level: Intermediate

Temperament: Peaceful

Diet: Herbivore

Coral Safe: Yes

Fish Safe: Yes

Invertebrate Safe: Yes

Acclimation Time: 30 minutes+

Aquarium Environment: Reef or fish-only aquarium

Tankmates: Peaceful

Minimum Tank Size: 180 gallons

Temperature Range: 72 - 82°F (22 - 27°C)

Specific Gravity: 1.020 - 1.025

pH: 8.0 - 8.5

 Acanthurus tristis (Indian Ocean Mimic Tang/Surgeonfish)
Photo © John Randall
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