Blue tang
Paracanthurus hepatus
FishMarine
The blue tang has a compressed oval body, bright blue with a black band from the eye extending along the back. Its caudal fin is bright yellow. It reaches up to 30 cm. It is active and swims in schools in the wild. In the aquarium, it is generally peaceful but can become territorial. It is sensitive to ich and skin diseases. Its caudal spine is sharp. It needs a large volume to swim.
Recommended parameters
| Parameter | Recommended range |
|---|---|
| Temperature | 24–28 |
| pH | 8.1–8.4 |
| Salinity | 1.02–1.025 |
| NO₃ | ≤ 5 |
| PO₄ | ≤ 0.05 |
Care
Difficulty3/5
Dietherbivore
Min. tank300 L
Min. group1
Adult size30 cm
Lifespan12 ans
Temperamentpeaceful
Care notes
Aquarium of at least 300 L, stable seawater (salinity 1.020–1.025, pH 8.1–8.4, temperature 24–28 °C). Herbivorous, feed with algae and vegetables. Good water flow and moderate lighting are necessary. Avoid aggressive tankmates. Quarantine is recommended. Regular water changes and a protein skimmer are important. Keep nitrates below 5 mg/L.