Naso Tang

The Naso Tang, also known as the Orangespine Unicornfish, undergoes a dramatic transformation as it matures. Specimens from Hawaii are often more vibrantly colored than those from other regions. Juveniles typically display a dark gray body with a bold blue stripe along the dorsal fin and a bright orange stripe on the anal fin. As the fish matures, its body shifts to a rich reddish-brown hue, and the juvenile stripes are enhanced by deeper, more vivid colors.

The tail develops a striking lyre shape with a yellow vertical bar near the end, and two prominent orange patches form around the peduncle spines. One of the most notable changes occurs on the face, where a thin black mask forms between the eyes and mouth, edged in vibrant yellow. The lips also take on a reddish-orange tone.

To thrive, the Naso Tang requires an aquarium of at least 180 gallons, offering ample swimming space and plenty of rockwork for hiding. A secure, tight-fitting lid is essential, as this species is known to jump. While generally peaceful with other fish, it may become aggressive toward other tangs, especially those with a similar shape or coloration.

Although they will consume meaty foods, it’s crucial to provide a diet rich in marine-based seaweed and algae to support their health, boost immunity, and reduce territorial behavior. Feed dried seaweed using a veggie clip or tie it to a rock at least three times a week. Recommended options include Sea Veggies, Seaweed Salad, and Ocean Nutrition products, which are easy to use and highly nutritious.