Regal Tang (Paracanthurus hepatus)OverviewThe Regal Tang (Paracanthurus hepatus), also known as the Blue Tang or Palette Surgeonfish, is one of the most iconic and visually striking marine species. It features a vibrant royal blue body, black palette markings along its sides, and a bright yellow caudal fin. Native to the Indo-Pacific region, including reefs around East Africa, Japan, and the Pacific islands, this tang is an active and graceful swimmer, making it a highly sought-after addition to large marine and reef aquariums.Regal Tangs are peaceful in nature but require ample swimming space and stable water conditions to thrive in captivity.Aquarium Requirements Minimum Tank Size: 125 gallons (475 litres) or larger Temperature: 24–27°C (75–81°F) pH: 8.1–8.4 Specific Gravity (Salinity): 1.020–1.025 Alkalinity: 8–12 dKH Ammonia & Nitrite: 0 ppm Nitrate:< 10 ppm Aquascape: Provide open swimming areas, moderate to strong water flow, and live rock for grazing and hiding Due to their active swimming behavior, Regal Tangs require a well-maintained, spacious aquarium with excellent filtration.Diet and FeedingThe Regal Tang is primarily herbivorous but will accept occasional meaty foods. A balanced and varied diet supports health, coloration, and natural grazing behavior: Dried seaweed (nori) or macroalgae sheets Spirulina-based flakes or pellets Frozen herbivore blends Occasional mysis or brine shrimp for supplemental protein Feed two to three small portions daily to mimic natural grazing behavior.Temperament and CompatibilityRegal Tangs are generally peaceful and compatible with most community species, though they may become territorial toward other tangs in smaller aquariums.Tankmate Recommendations: Suitable: Peaceful or semi-aggressive species such as angelfish, butterflyfish, wrasses, and clownfish Avoid: Overcrowding with other tangs in small tanks Introducing the Regal Tang into an established tank helps reduce stress and promotes natural behavior.Reef Compatibility✅ Reef SafeRegal Tangs are reef safe and do not harm corals or sessile invertebrates. Their grazing on filamentous algae contributes to a clean and healthy reef environment.Additional Information Maximum Size: Up to 30 cm (12 inches) Lifespan: 8–10 years with proper care Difficulty Level: Moderate Natural Behavior: Active swimmer, constant grazer, generally peaceful Origin: Indo-Pacific reefs, from East Africa to the Pacific The Regal Tang (Paracanthurus hepatus) is a vibrant, hardy, and active species that adds movement, color, and natural algae control to medium to large marine or reef aquariums. With stable water conditions, ample swimming space, and a varied herbivorous diet, it thrives as a long-lived and visually captivating member of the aquarium community.
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