Description
Scientific Name: Acanthurus nigricauda
Common Name: Black Tang (also known as Epaulette Surgeonfish)
Adult Size: 12–14 inches (30–35 cm)
Life Expectancy: 8–12 years in captivity (longer in the wild)
Tank Requirements
Minimum Tank Size: 150 gallons (570 liters)
Requires lots of swimming space and hiding spots
Ideal Temperature: 75–82°F (24–28°C)
pH Range: 8.1–8.4
Water Hardness: 8–12 dKH
Temperament:
Generally peaceful, but may become territorial with other tangs or similar-shaped species
Better kept alone or with tangs of a different genus
Active swimmer, best for larger reef or FOWLR tanks
Diet & Nutrition
Primarily herbivorous
Feeds on filamentous algae, detritus, and organic matter in the wild
In captivity, offer:
Nori (seaweed)
Spirulina flakes/pellets
Algae-based frozen foods
Occasional mysis or brine shrimp as supplements
