Common name: Indian Ocean Mimic Surgeonfish
General Information
The Indian Ocean Mimic Surgeonfish, scientifically known as Acanthurus tristis, is a fascinating species that captures the interest of many marine aquarists. This species is known for its mimicry of juvenile angelfish, particularly those from the genus Centropyge. This mimicry is not just a visual spectacle but serves as a clever survival strategy, allowing the young surgeonfish to blend into their environment and avoid predators.
The Indian Ocean Mimic Surgeonfish is primarily found in the Indian Ocean, as its name suggests. It is a relatively peaceful species that can adapt well to life in a home aquarium, making it a popular choice for hobbyists who appreciate its unique appearance and behavior.
Details
- Estimated price
- Moderate
- Recommended minimum tank volume
- 250 liter (66 gallons)
- Salinity
- S.G. 1.023 to 1.026
- Temperature
- 24 to 28 °C (75 to 82 °F)
- Acidity
- pH 8.1 to 8.4
- Average size
- 25 cm (10″)
- Care level
- Moderate to easy Requires a well-maintained aquarium with ample swimming space
- Diet
- Herbivore Feeds on marine algae and seaweed; variety is key to health
- Social
- Solo Best kept solo unless in a very large tank to prevent territorial disputes
- Reefsafe
- Yes
- Aggression
- Peaceful Generally peaceful but can be territorial with conspecifics
- Captive bred
- No
- IUCN Red List
- EXEWCRENVUNTLC
Taxonomy
- KingdomAnimalsAnimalia
- PhylumChordatesChordata
- ClassRay-finned FishesActinopterygii
- OrderPerch-like FishesPerciformes
- FamilySurgeonfishAcanthuridae
- GenusSurgeonfishAcanthurus
- SpeciesIndian Ocean Mimic SurgeonfishAcanthurus tristis Randall, 1993
- Source: GBIF | Global Biodiversity Information Facility
Care
Caring for Acanthurus tristis requires attention to detail, as they thrive best in well-maintained aquariums that closely mimic their natural reef environment. These fish require ample swimming space and plenty of live rock structures to explore and graze upon. A tank size of at least 250 liters (about 66 gallons) is recommended to accommodate their active swimming habits.
Diet and Feeding
Acanthurus tristis is an herbivore, primarily grazing on algae in the wild. In captivity, their diet should include a variety of marine algae, seaweed sheets, and high-quality herbivore pellets. Offering a diverse diet helps maintain their vibrant coloration and overall health. Feeding should be done once or twice daily, ensuring that the fish consume all the food within a few minutes to maintain water quality.
Behavior and Compatibility
The Indian Ocean Mimic Surgeonfish is generally peaceful, making it a suitable addition to community reef tanks. However, like many surgeonfish, they can exhibit territorial behavior, especially towards conspecifics or other tangs. It is advisable to keep only one individual per tank unless the aquarium is large enough to accommodate multiple territories.
Health and Common Issues
Acanthurus tristis is a hardy species, but they can be susceptible to common marine ailments such as ich and marine velvet, particularly if water quality is not maintained. Regular monitoring of water parameters and prompt treatment of any signs of illness are essential to keeping these fish healthy.
Habitat
This species is native to coral reefs in the Indian Ocean, often found in areas with abundant coral and rocky substrates. They prefer environments with plenty of crevices and hiding spots, which provide security and grazing opportunities.