The Ringtail Tang is a impressive, deep-bodied surgeonfish recognized by its dark olive-grey to brown coloration, accented by a distinct white ring around the base of its tail stem and bright blue fin margins. Capable of growing quite large, this species demands a spacious aquarium with extensive swimming room and powerful water circulation. They are exceptionally hardy once established and act as robust grazers, keeping microalgae growths under control across large rock formations. Given their energetic nature and potential size, they are best suited as centerpiece additions to large marine systems.
| Feature |
Specification |
| Scientific Name |
Acanthurus blochii |
| Care Level |
Moderate |
| Max Size |
40 cm |
| Colour |
Dark olive-brown with a stark white band around the caudal peduncle. |
| Shape |
Deep oval, muscular tang profile. |
| Location |
Indo-Pacific. |
| Diet |
Herbivore (Macroalgae, nori, spirulina, high-quality marine pellets). |
| Water Temp |
24°C – 28°C. |
| Temperament |
Semi-aggressive. |
| Aquarium Size |
500+ Litres. |
| Reef Safe? |
Yes. |