Reeflings

Common name: ocean surgeon

Scientific name: Acanthurus bahianus Castelnau, 1855

General information

The Ocean Surgeonfish, scientifically known as Acanthurus bahianus, is a vibrant and active member of the reef community. It is often confused with its Pacific cousin, the Blue Tang (Paracanthurus hepatus), made famous by the character Dory in the movie 'Finding Nemo'. However, the Ocean Surgeonfish can be distinguished by its more uniform coloration and less pronounced scalpel-like spine on the caudal peduncle.

Details

Recommended minimum tank volume
300 liter (79 gallons)
Salinity
S.G. 1.020 to 1.025
Temperature
24 to 27 °C (75 to 81 °F)
Acidity
pH 8.1 to 8.4
Average size
39 cm (1′3″)
Care level
Moderate to easy Needs ample swimming space
Diet
Herbivore Algae-based diet; may accept flakes
Social
Solo Territorial; best kept alone
Reefsafe
Yes
Aggression
Semi aggresive May be aggressive to similar species
Captive bred
No

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Chordates
    Chordata
  3. Class
    Ray-finned Fishes
    Actinopterygii
  4. Order
    Perciformes
    Perciformes
  5. Family
    Surgeonfish
    Acanthuridae
  6. Genus
    Surgeonfish
    Acanthurus
  7. Species
    ocean surgeon
    Acanthurus bahianus Castelnau, 1855
  8. Synonyms
    Acanthurus tractus Poey, 1860
    Acronurus nigriculus Poey, 1875
    Hepatus bahianus (Castelnau, 1855)
    Teuthis bahianus (Castelnau, 1855)
    Teuthis tractus (Poey, 1860)

Care

Acanthurus bahianus is a hardy species that adapts well to life in captivity, provided it is given ample space to swim and a diet rich in marine algae and vegetable matter. They are known to graze on algae throughout the day, so a well-established aquarium with live rock for grazing is beneficial. They can also be fed with high-quality dried seaweed and algae-based prepared foods.

Reproduction

In the wild, Ocean Surgeonfish spawn in groups during specific times of the year, often around the full moon. In the home aquarium, breeding is rare, but with optimal conditions and a large enough tank, it is possible to observe courtship behaviors.

Habitat

The Ocean Surgeonfish is native to the Western Atlantic, from Florida and the Gulf of Mexico to Brazil, including the Caribbean Sea. It is commonly found in shallow reefs and seagrass beds, where it grazes on algae. In the aquarium, they require a large tank with plenty of open swimming space and a strong current to mimic their natural habitat.