Common name: Tomini Tang

Scientific name: Ctenochaetus tominiensis Randall, 1955
Tomini Surgeonfish or Tomini Tang (Ctenochaetus tominiensis)Tomini Surgeonfish or Tomini Tang (Ctenochaetus tominiensis)
Tomini Tang (Ctenochaetus tominiensis)Tomini Tang (Ctenochaetus tominiensis)

General Information

The Tomini Tang, scientifically known as Ctenochaetus tominiensis, is a popular choice among marine aquarists due to its manageable size and striking appearance. This species is easily recognizable by its oval-shaped body, adorned with a beautiful blend of blue-gray and yellow hues, and a distinctive white tail. Its relatively small size compared to other tangs makes it an ideal candidate for medium-sized reef aquariums.

In the aquarium trade, the Tomini Tang is valued not only for its beauty but also for its utility. It plays a significant role in controlling algae growth, making it a beneficial addition to any reef setup. Its active grazing behavior helps maintain the cleanliness of the tank, contributing to the overall health of the ecosystem.

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 to 8.4
Average size
15 cm (6″)
Care level
Moderate to easy Moderate care level; suitable for aquarists with some experience
Diet
Herbivore Primarily feeds on algae; supplement with spirulina and seaweed
Social
Solo Best kept solo in medium tanks to avoid territorial disputes
Reefsafe
Yes
Aggression
Semi aggresive May show aggression towards similar species
Captive bred
Yes Tomini Tangs are often captive bred, enhancing their hardiness
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
    Bristletooth Tangs
    Ctenochaetus
  7. Species
    Tomini Tang
    Ctenochaetus tominiensis Randall, 1955
  8. Synonyms
    Ctenochaetus tominienis Randall, 1955
  9. Source: GBIF | Global Biodiversity Information Facility

Care

The Tomini Tang is known for its hardiness and adaptability, making it suitable for aquarists with moderate experience. It thrives in well-established aquariums with plenty of live rock for grazing and hiding. A tank size of at least 250 liters is recommended to provide ample swimming space and to accommodate its active nature.

To mimic its natural habitat, aquarists should ensure the presence of sufficient rockwork and crevices. This not only offers shelter but also encourages natural foraging behavior. A balanced diet and stable water conditions are essential for its well-being.

Diet and Feeding

In the wild, the Tomini Tang primarily feeds on algae, making it an effective algae grazer in home aquariums. In captivity, its diet should consist of a variety of marine-based foods, including seaweed, spirulina, and high-quality algae-based pellets. Supplementing its diet with occasional meaty foods like mysis shrimp can ensure a balanced nutritional intake.

Feeding should occur once or twice daily, with portions adjusted based on its size and activity level. A varied diet not only supports its health but also enhances its vibrant coloration.

Behavior and Compatibility

Tomini Tangs are generally peaceful but can exhibit semi-aggressive behavior towards other tangs or similarly shaped fish. They are best kept as the only tang in a medium-sized tank to prevent territorial disputes. Their peaceful nature allows them to coexist with a variety of other reef-safe fish and invertebrates.

While not toxic, Tomini Tangs have sharp spines on their tails, which they may use defensively. Care should be taken when handling or introducing them to new tank mates.

Health and Common Issues

With proper care, Tomini Tangs can live up to 8-10 years in captivity. They are generally hardy but can be susceptible to marine diseases such as ich. Maintaining optimal water quality and a stress-free environment are crucial for preventing health issues.

When selecting a Tomini Tang, look for individuals with clear eyes, smooth skin, and active behavior. Regular monitoring and quarantine of new additions can help prevent the introduction of diseases.

Habitat

The Tomini Tang is native to the western Pacific Ocean, particularly around Indonesia and the Philippines. It inhabits coral reefs and lagoons, where it grazes on algae-covered surfaces. In captivity, replicating these conditions with stable water parameters and moderate water flow will help them thrive.

Conservation Status

Currently, the Tomini Tang is not listed as a threatened species and is considered of least concern. However, responsible sourcing and captive breeding efforts are encouraged to ensure sustainable trade practices.