The two-spotted bristletooth tang ( Ctenochaetus binotatus ) is an extremely useful and peaceful surgeonfish, ideally suited for large reef aquariums. Its effective algae control, robust health, and lively behavior make it an indispensable helper in the aquarium and an impressive visual attraction.
🐟 Features
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Size: Adult animals reach a length of about 16–18 cm and therefore require sufficient swimming space.
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Coloration: Ctenochaetus binotatus is distinguished by its brownish-gray base color with fine lines across the body and two striking dark spots behind the eyes – a subtle yet elegant appearance. Under aquarium lighting, the body shimmers metallically, creating subtle color accents.
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Behavior: The two-spotted bristletooth tang is an active swimmer that spends the entire day rasping biofilm and microalgae from rocks, glass, and substrate. It remains peaceful and gets along well with other fish.
🌊 Posture & Care
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Aquarium size: 500 liters or more is recommended. Generous swimming areas, reef structures, and ample hiding places ensure a species-appropriate environment. Well-established algae growth is particularly helpful during the acclimation phase.
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Water parameters: Temperature: 24–27 °C | pH value: 8.0–8.4 | Density: 1.022–1.025
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Socialization: Ctenochaetus binotatus is a peaceful surgeonfish that gets along well with other non-aggressive species. It can be kept singly or with other surgeonfish (except for similar Ctenochaetus species).
🍽️ Food
The two-spotted bristletooth tang is a specialized algae grazer. It feeds primarily on microalgae and detritus, which it grazes with its fine bristle teeth. To ensure a balanced diet, it should also be fed frozen or dried plant-based food, nori seaweed, spirulina, and finely chopped vegetables.
🌟 Special Features & Benefits
Ctenochaetus binotatus is an extremely useful helper for algae control in aquariums. Its preference for microalgae and its constant activity actively contribute to biological stability and help keep the aquarium clean and healthy. Its peaceful nature, hardiness, and important function make it an indispensable inhabitant of large reef tanks.
👉 Conclusion: The two-spotted bristletooth tang is an easy-to-care-for, peaceful, and extremely useful fish for large saltwater aquariums. With its effective algae control, lively activity, and elegant appearance , Ctenochaetus binotatus is an excellent choice for experienced saltwater aquarists.
