Chevron Tang (Ctenochaetus hawaiiensis)

From Pet Wiki
Jump to navigation Jump to search
Chevron Tang
Ctenochaetus hawaiiensis
Chevron Tang (Ctenochaetus hawaiiensis)
Name Chevron Tang
Name Lat. Ctenochaetus hawaiiensis
Family Surgeonfishes
Family lat. Acanthuridae
Order Surgeonfishes
Order lat. Acanthuriformes
Origin Pacific
Habitat Reefs
Diet Herbivore
pH 8.1-8.4
Hardness 8-10 °KH
Behavior Semi-aggressive
Keeping Individual
Reef Compatible Yes
Care Level Moderate
Life Span 5-8 years
Protection No
Metric Units
Size 24 cm
Temperature 24-28 °C
Salinity 33-36 ‰
Aquarium ~ 750 l
US Units
Size 10"
Temperature 75-82 °F
Salinity 1.020-1.025 sg
Aquarium ~ 200 gal

Distribution and habitat

The range of Ctenochaetus hawaiiensis is the Pacific Ocean from Australia through Micronesia to Hawaii and the Marquesas, where they live on rocky and coral reefs to depths of 60m.


They require a well-structured aquarium with plenty of swimming space and a reef structure (hiding, resting and retreat possibilities) with living stones which they can graze on and which act like a biological filter. Only lime-rich, heavy metal-free sands, gravels, stones or sea sand of various grain sizes may be used as substrate

Filters, skimmers and heaters are necessary to ensure water quality, as well as pumps to simulate tides, swells and bottom currents. Lighting must correspond to the species-appropriate day-night rhythm of the animals

Salinity: 33-36 ‰ pH value: 8.1-8.4
Carbonate hardness: 8-10 °KH Nitrate content: 2-8 mg/l
phosphate content: 0.01-0.1 mg/l nitrite content: 0.0-0.05 mg/l

For salinity, an average value should be aimed for, which may only vary slightly by +/- 0.5 ‰. Ammonia and ammonium must not be measurable. Special attention must be paid to constantly good water quality.


They feed mainly on plant food, such as algae and seaweed. The change of diet does not always succeed without problems. The diet consists mainly of commercially available algae and kelp (e.g. nori, caulerpa, kelp) supplemented with high-quality flake or granulated food for herbivores or a commercially available vitamin-enriched frozen special food mix for herbivores. Live or frozen food such as artemia, krill or mysis should only be offered in small quantities. Plant food strengthens the immune system and reduces aggression. Fine coral sand serves as a digestive aid for them

It is recommended to feed small portions several times a day. Regular and varied feeding promotes health and prevents deficiency symptoms.

Behaviour and compatibility

It is recommended to keep them individually. They behave very territorial within the species and towards other surgeonfishes. Keeping them in pairs is only possible in a much larger and richly structured tank. To avoid ranking fights, they should be put into the aquarium at the same time. Towards other fishes they behave peacefully.

Sex dimorphism

There are no known external distinguishing characteristics.

Reproduction and breeding

There are no known reports of successful breeding in the aquarium.


Juveniles have 2-3 years of juvenile plumage that is distinctly different from adult coloration.

Characteristic of surgeonfishes is the scalpel located on either side of the caudal peduncle, which can be unfolded from its pocket by curving the body. As coral reef dwellers, they should not be maintained in a fish-only aquarium.

If different species are kept together, care should be taken to match the fish in terms of water quality and temperature requirements and social behavior, and to ensure that the setup meets the needs of all species kept together. New fish to be introduced must be acclimated slowly to the water in the aquarium.

Further literature can be found in your pet store.


Text: Werner Winter; Image: Franz Lowak

Source: KUITER, DEBELIUS (2007): Atlas der Meeresfische: Die Fische an den Küsten der Weltmeere, Kosmos Verlag; BAENSCH & DEBELIUS (2006): Meerwasser Atlas Bd. 1, Mergus Verlag; ENGELMANN (2005): Zootierhaltung - Tiere in menschlicher Obhut: Fische, Verlag Harri Deutsch

  • Gemäß § 21 Abs. 5 Tierschutzgesetz idgF