Blue Eye Kole Tang

The Blue Eye Kole Tang (Ctenochaetus binotatus), also known as the Two Spot Bristletooth Tang, is a captivating marine species appreciated for its vibrant blue eyes and algae-grazing habits. Native to the Indo-Pacific region, this tang is a beneficial addition to reef aquariums due to its peaceful nature and contribution to algae control.

(REEF SAFE / INTERMEDIATE)

Essential Information:

• Common Names: Blue Eye Kole Tang, Two Spot Bristletooth Tang
• Scientific Name: Ctenochaetus binotatus
• Family: Acanthuridae
• Origin/Habitat: Inhabits coral and rubble areas of deep lagoons and seaward reefs throughout the Indo-Pacific region.
• Maximum Size: Typically grows up to 7 inches (18 cm) in length.
• Lifespan: With proper care, can live up to 5-7 years in captivity.
• Level of Difficulty: Intermediate; suitable for aquarists with some experience in marine fish care.

Appearance & Physical Traits:

• Coloration & Pattern: Features a brown to dark brown body with horizontal, greenish-blue lines. Notably, it has two dark spots near the tail fin and bright blue rings around the eyes.
• Body Shape & Structure: Oval-shaped, laterally compressed body with a flat head and a long, pointed snout; equipped with specialized bristle-like teeth for grazing on algae.

Habitat & Environmental Needs:

• Minimum Tank Size: A 70-gallon (265-liter) aquarium is recommended to provide ample swimming space.
• Water Temperature: Maintain between 72°F and 78°F (22°C to 26°C).
• pH Level: Keep between 8.1 and 8.4.
• Specific Gravity: Optimal range is 1.020 to 1.025.
• Aquascape: Incorporate ample live rock to provide grazing surfaces and hiding spots; ensure open swimming areas are available.

Diet & Feeding:

• Diet Type: Herbivorous
• Preferred Foods: Primarily feeds on algae; in captivity, diet should include marine algae, seaweed sheets, and high-quality herbivore preparations.
• Feeding Frequency: Offer food 2 to 3 times daily in appropriate portions to maintain health and vibrant coloration.

Behavior & Compatibility:

• Temperament: Generally peaceful; may exhibit territorial behavior towards conspecifics or similar species.
• Social Behavior: Best kept singly unless in a very large aquarium; can coexist with a variety of other peaceful marine species.
• Tank Mate Compatibility: Compatible with most reef-safe fish and invertebrates; avoid housing with aggressive species that may bully them.
• Activity Level: Active swimmer and constant grazer; requires ample space and surfaces for grazing.

Care Considerations & Additional Notes:

• Ease of Care: Hardy and adaptable; thrives in well-maintained aquariums with stable water parameters.
• Special Requirements: Regular water changes and monitoring are essential to maintain water quality; providing a varied diet rich in algae is crucial for health.
• Breeding Info: Breeding in captivity is rare and not well-documented.
• Additional Notes: Known for their beneficial role in controlling algae growth in reef aquariums.