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Bristletooth Tang (Ctenochaetus tominiensis / Ctenochaetus strigosus (species varies by common usage))

Bristletooth Tang

Ctenochaetus tominiensis / Ctenochaetus strigosus (species varies by common usage)
Family
Tang
Care level
Beginner
Temperament
Semi-aggressive
Reef safe
Reef safe
Max size
18 cm
Min tank
300 L · 79 gal
Origin
Indo-Pacific
Diet
Herbivore
Food
Nori, Marine algae, Herbivore pellets, Spirulina

Overview

Bristletooth Tangs are a group of small-to-medium Ctenochaetus species known for their fine, bristle-like teeth adapted to sifting detritus and diatoms off rock and sand, rather than grazing larger algae leaves the way many other tangs do. This makes them especially useful in a reef tank for cleaning up film algae and detritus in places other grazers miss.

They're generally one of the hardier, more forgiving tangs available, tolerating a wider range of tank sizes and conditions than many Acanthurus species, which makes them a common recommendation for a first tang.

Their understated brown-to-yellow colouration with fine speckling isn't as flashy as some tangs, but their usefulness and hardiness make them a mainstay of reef tank clean-up crews.

Compatibility

Bristletooth Tangs can be territorial toward other tangs, particularly similar-bodied species, so care with stocking order and tank size is worthwhile if multiple tangs are planned. They're generally peaceful with unrelated community fish.

They are fully reef safe and won't bother corals, clams, or invertebrates.

Health & quarantine

This is one of the hardier tangs available, though it's still susceptible to marine ich like all Acanthuridae, so a minimum four-week quarantine is recommended as standard practice. Good water flow and a varied diet support long-term health and colour.

Frequently asked questions

Is the Bristletooth Tang a good first tang?
Yes, it's one of the hardier, more forgiving tangs and a common recommendation for keepers new to tangs.
What does a Bristletooth Tang eat in a reef tank?
It naturally sifts detritus and diatoms off rock and sand, supplemented with nori, pellets and spirulina-based foods.
Is the Bristletooth Tang reef safe?
Yes, it's herbivorous and won't bother corals or invertebrates.
What tank size does a Bristletooth Tang need?
300 litres is a reasonable minimum given its moderate adult size.
Can I keep a Bristletooth Tang with other tangs?
With care — avoid other similarly shaped tangs in a smaller system to reduce territorial conflict.

Care guidance is drawn from our own experience — every fish is an individual, so treat it as a starting point, not a guarantee. Not sure if a species suits your tank? Come ask us in store. New to the terms? Read the care-terms glossary.