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Twospot Bristletooth (Ctenochaetus binotatus)

Find Twospot Bristletooth across reef-livestock retailers and from fellow hobbyists on ReefDock. Compare sources, check live pricing where available, and review source-tank parameters on Reef-Trak-verified fish listings before you buy.

Twospot Bristletooth
Photo: Diego Delso · CC BY-SA 4.0
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Where to buy Twospot Bristletooth

ReefDock searches the following reef retailers for this fish. Click through to see the live price.

  • Saltwaterfish

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  • Amazon

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  • Petco

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About Twospot Bristletooth

A small, oval-bodied tang with a dark brown to tan body and characteristic dark spots or markings near the eye and gill area. The fish has prominent bristle-like teeth (hence "bristletooth"), and a distinctly curved mouth adapted for grazing algae from rock and substrate surfaces.

Key facts

Origin
Indo-Pacific region from the Red Sea and East Africa to Hawaii and French Polynesia, typically found in coral reef environments at depths of 5–60 meters.
Common Health Issues
Parasitic infections (ich), head and lateral line erosion (HLLE), intestinal parasites
Diet Details
Ctenochaetus binotatus is a dedicated herbivore that feeds primarily on benthic diatoms and filamentous algae. In captivity, provide quality dried seaweed sheets and high-quality herbivorous pellets multiple times daily, supplemented with fresh vegetable matter such as blanched spinach or nori.
Max Size
7
Diet
herbivore
Reef safety
Reef Safe
Appearance
A small, oval-bodied tang with a dark brown to tan body and characteristic dark spots or markings near the eye and gill area. The fish has prominent bristle-like teeth (hence "bristletooth"), and a distinctly curved mouth adapted for grazing algae from rock and substrate surfaces.
Temperament
Peaceful
Aka
Twospot Bristletooth
Min tank size
75 gallons
Care Requirements
• Minimum 75-gallon tank; 100+ gallons preferred for long-term health • pH 8.1–8.3, salinity 1.023–1.025, temp 72–78°F • Strong water flow and excellent filtration essential • Herbivorous; feed quality spirulina, nori, and varied algae-based foods • Peaceful grazer; avoid with overly aggressive tangs or fish-eating species
Difficulty Level
Moderately challenging. Requires excellent water quality, a well-established tank with abundant live rock for grazing, and a mature reef system. More hardy than some other bristletooth species but demands consistent feeding and stable conditions.

Looking for a hobbyist seller?

ReefDock's marketplace lets reef-keepers sell fish directly to other reef-keepers with Stripe-secured checkout and live-arrival photo confirmation. Browse current fish listings on ReefDock, or list your own.

Verify the source tank before you buy

ReefDock is the sister app to Reef Trak. Sellers who maintain a Reef Trak tank log can publish source-tank parameters on eligible fish listings — so you can see the conditions a fish was raised in before you buy. Log this fish on Reef Trak.

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