Ctenochaetus binotatus

Datasheet

General Description

The Twospot surgeonfish, scientifically known as Ctenochaetus binotatus, belongs to the Acanthuridae family, specifically the Ctenochaetus genus. These fish are recognized for their unique teeth that allow them to scrape algae and organic matter from rocks. They are generally less vibrant in color compared to other surgeonfish, with their hues fading as they grow to around 3 inches (7-8 cm).

Aquarium Suitability

Twospot surgeonfish are suitable for aquariums but require careful consideration due to their peaceful yet territorial nature. They prefer environments with ample sand and rocks for grazing and hiding spaces. While generally peaceful, they can exhibit aggression towards similar species, so it's essential to monitor their interactions closely.

Demands

With average hardiness, Twospot surgeonfish thrive in well-established aquariums with a minimum tank size of 500 liters. They necessitate sufficient space for swimming and grazing on algae-rich surfaces. Keeping them in a diet primarily based on algae ensures their immune system remains healthy, supplemented by diverse frozen and algae-based foods.

Care and Hardiness

These fish are known to be reef-safe and can peacefully coexist with a variety of tank mates. Maintaining water conditions within the parameters of pH 8.1-8.4, temperature range of 22.2-25.6°C, and specific gravity 1.020-1.025 supports their well-being and vitality.

Reef Suitability

Twospot surgeonfish are always considered reef-safe, as they typically do not pose a threat to corals or invertebrates. Their grazing behavior helps in keeping the aquarium free of algae, benefiting the overall reef ecosystem.

Aquarium Setup

For optimal care of Twospot surgeonfish, set up an aquarium with ample live rocks providing hiding spaces and grazing areas. This species thrives in a well-run tank with algae-rich surfaces, ensuring their dietary needs are met. Additionally, maintaining a peaceful environment with appropriate hiding spots is crucial for their overall well-being.

Behaviour

Despite being mostly peaceful, Twospot surgeonfish can display territorial behavior towards similar species. It is advisable to introduce them carefully to avoid conflicts and monitor their interactions to prevent aggression within the tank.

Feeding and Diet

These fish primarily feed on macroalgae like seaweed and microalgae such as spirulina. It is crucial to include algae-based foods like plant-based flakes or Nori seaweed in their diet to support their immune system health. Supplementing their diet with a variety of frozen foods ensures their nutritional requirements are met.

Dimorphism

Twospot surgeonfish may exhibit slight dimorphism, with differences in coloration between genders. In captive settings, successful reproduction may be achievable with proper care and attention to their specific breeding requirements.

Habitat and Distribution

Indigenous to the Indo-Pacific region, Twospot surgeonfish are found from East Africa to the Tuamoto Islands and southward to central New South Wales (Australia) and New Caledonia. They prefer habitats with ample rocks and algae-rich environments that mimic their natural grazing grounds in the wild.