Reeflings

Common name: Bluelined Surgeonfish

Scientific name: Acanthurus nubilus (Fowler & Bean, 1929)

General Information

The Bluelined Surgeonfish, scientifically known as Acanthurus nubilus, is a striking species found in the deep waters of the Indo-Pacific region. Its distinct blue lines and elegant body shape make it a captivating addition to large marine aquariums. Despite its beauty, this species is less commonly seen in home aquariums due to its specific care requirements and natural habitat preferences.

This surgeonfish is significant in the hobbyist community for its unique appearance and the challenge it presents to experienced aquarists. While not as commonly kept as other surgeonfish, its presence in a collection can be a testament to an aquarist's dedication and skill. In the wild, Acanthurus nubilus plays a role in maintaining the health of coral reefs by grazing on algae, thus preventing algal overgrowth.

Details

Recommended minimum tank volume
500 liter (130 gallons)
Salinity
S.G. 1.023 to 1.026
Temperature
22 to 26 °C (72 to 79 °F)
Acidity
pH 8 to 8.5
Average size
40 cm (1′4″)
Care level
Difficult Requires a large tank and stable conditions
Diet
Herbivore Primarily feeds on marine algae and seaweed sheets
Social
Solo Best kept solo to prevent territorial disputes
Reefsafe
Yes
Aggression
Semi aggresive Can be territorial, especially with other tangs
Captive bred
No
IUCN Red List
EX
EW
CR
EN
VU
NT
LC

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Chordates
    Chordata
  3. Class
    Ray-finned Fishes
    Actinopterygii
  4. Order
    Perch-like Fishes
    Perciformes
  5. Family
    Surgeonfish
    Acanthuridae
  6. Genus
    Surgeonfish
    Acanthurus
  7. Species
    Bluelined Surgeonfish
    Acanthurus nubilus (Fowler & Bean, 1929)
  8. Synonyms
    Harpurina nubilus (Fowler & Bean, 1929)
    Hepatus nubilus Fowler & Bean, 1929
  9. Source: GBIF | Global Biodiversity Information Facility

Care

Due to its size and natural habitat, the Bluelined Surgeonfish requires a spacious tank with plenty of swimming room. It thrives in aquariums that replicate its natural environment, with ample live rock for grazing and hiding. This species is best suited for advanced aquarists who can provide stable water conditions and a diet that meets its herbivorous needs.

Diet and Feeding

Acanthurus nubilus is primarily herbivorous, feeding on a variety of algae in the wild. In captivity, its diet should consist of high-quality marine algae, seaweed sheets, and vegetable-based flake or pellet foods. Offering a variety of foods helps ensure balanced nutrition and supports their vibrant coloration.

Behavior and Compatibility

This species is generally peaceful but can become territorial, especially in smaller tanks or when housed with other tangs. It is best kept in a large, well-structured environment with plenty of space to establish territories. While it can be compatible with a range of other marine species, care should be taken to avoid housing it with overly aggressive fish.

Health and Common Issues

Bluelined Surgeonfish are susceptible to typical marine fish diseases, such as ich and marine velvet. Regular monitoring of water quality and maintaining a stress-free environment are crucial to their health. Ensuring a varied diet rich in vitamins can help bolster their immune system and prevent common ailments.

Habitat

Acanthurus nubilus is naturally found at depths ranging from 30 to 100 meters (approximately 100 to 330 feet), often near drop-offs in coral reefs. Its distribution includes the western Pacific Ocean, particularly around areas like Indonesia and Papua New Guinea. The species prefers cooler, deeper waters compared to many other reef fish, which influences its care requirements in captivity.