Unicorn Tang

This unicorn tang was one of the first fish added to the tank.  He's just about doubled in size over the last year.

Below is some care info on the fish:

Scientific Name : Naso unicornis
Common Names : Bluespine Unicornfish. Unicorn Tang
Care Level : Easy to Moderate, can be quite hardy once acclimated.
Size : Up to 24 inches (61 cm)
Life span : 10 years or longer
pH : 8.1 - 8.4
Temperature : 75°F - 82°F (25°C - 28°C)
Specific Gravity : 1.020 - 1.025
Carbonate Hardness (dKH) : 8 - 12°
Origin / Habitat : Indo-Pacific, Hawaii, Red Sea
Temperament / Behavior : They may be aggressive with other unicorns in smaller tanks but may do ok in multiples in extremely large tanks. They also are constantly on the move during the day and will need a larger tank for swimming space.
Breeding / Mating / Reproduction : Very difficult to breed in captivity.
Tank Size : 250 gallon (946 liters) minimum
Compatible Tank Mates : Avoid keeping them with other species of tangs.
Reef Tank Compatible? : This saltwater fish should do fine in a large reef aquarium.
Fish Disease : Saltwater Fish Disease - Diagnose, Symptoms and Treatment, always use a quarantine tank for your saltwater fish!
Diet / Fish Food : Primarily an herbivore and feeds on marine algae in the wild. Try to give them a variety of marine foods but predominantly marine algae and spirulina. Having plenty of live rock for them to graze on helps. They should accept vitamin enriched flake foods, frozen and live foods.
Tank Region : All over
Gender : Difficult to determine the differences between males and female unicorn tangs but in adult specimens the horn may be more pronounced in males.