Blue Hippo Tang - Paracanthurus hepatus
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The Blue Hippo Tang (Paracanthurus hepatus) is a vibrant and active reef fish, famous for its striking royal blue body and black “palette” markings. Hardy and social, this tang is a centerpiece for larger reef aquariums, providing color and movement to the mid- and upper-water column.
Common Name: Blue Hippo Tang
Scientific Name: Paracanthurus hepatus
Family: Acanthuridae
Size: Up to 12 inches (30 cm)
Temperament: Semi-aggressive
Difficulty: Moderate
Reef Safe: With Caution
Native Region: Found throughout the Indo-Pacific, including the Philippines, Indonesia, and Great Barrier Reef, typically inhabiting coral-rich reef slopes and lagoons.
Tank Size: Minimum of 125 gallons
Temperature: 74–80°F (23–27°C)
pH: 8.0–8.4
Salinity: 1.023–1.025
Substrate/Decor: Open swimming areas with live rock for grazing; provide hiding spaces and stable water conditions.
• Diet: Herbivorous—feeds primarily on marine algae; supplement with spirulina, seaweed sheets, and high-quality herbivore flakes.
• Behavior: Semi-aggressive; may defend territory against other tangs or similar-shaped fish.
• Tankmates: Compatible with most peaceful reef species; avoid aggressive or overly territorial fish.
• Care Needs: Requires a well-established aquarium with ample swimming space and stable water parameters.
