Blue Hippo Tang

Bring one of the most iconic, vibrantly colored fish in the world into your marine display. Alternatively known as the Regal Tang or Palette Surgeonfish, the Blue Hippo Tang is universally loved for its brilliant royal blue body, striking black "palette" markings, and a bright yellow tail. These highly active, energetic swimmers bring unmatched movement and life to the middle and upper layers of large reef aquariums, making them a centerpiece species for hobbyists everywhere.
​While they are peaceful community members, they are an athletic fish that requires plenty of swimming space and a specialized diet to thrive long-term.

Quick Care Specifications

​Care Level: Moderate
Temperament: Semi-aggressive (Peaceful to most tank mates; aggressive toward other similar tangs)
Maximum Size: Up to 10 to 12 inches in captivity
Minimum Tank Size: 100 to 120 Gallons (Must have a length of at least 6 feet)
Reef Compatibility: 100% Reef-Safe (Completely safe for corals, clams, and invertebrates)
Water Parameters: 72–78°F, pH 8.1–8.4, dKH 8–12, Salinity 1.020–1.025 SG

​Key Features & Tank Requirements

​🥦 Omnivorous Diet with a Herbivore Focus
​While they eagerly consume meaty foods like mysis and brine shrimp, they require an immense amount of marine vegetation to keep their immune systems strong. You must provide them with daily sheets of dried seaweed (Nori) clipped to the tank glass, alongside high-quality spirulina flakes and pellets to prevent nutritional deficiencies.

​🏃 Huge Open Swimming Space
​Unlike some reef fish that prefer to hover near a single rock, Blue Hippo Tangs are built for speed and constant endurance swimming. They require long, spacious tanks (minimum 6-foot length as they mature) with strong water flow and open swimming channels, balanced by plenty of large rock caves where they can safely tuck away at night.

​🦠 High "Ich" and Parasite Sensitivity
​Often called "Ich magnets" in the hobby, Blue Hippo Tangs possess a very thin, delicate protective slime coat compared to other fish. This makes them highly susceptible to external parasites like Marine Ich (Cryptocaryon irritans) and Velvet. Utilizing a strict quarantine protocol before introduction and running a high-powered UV sterilizer on the system is strongly recommended.

​🎨 Quirky Basking & Hiding Behavior
​Don't panic if you see your new Blue Hippo Tang wedge itself tightly sideways between rocks, lay flat on the sand bed, or "play dead" when startled. This peculiar behavior is entirely normal for this specific species; they are natural hiders that lock themselves into tight rockwork crevices using their sharp caudal spines for safety when sleeping or stressed.

​⚠️ Lateral Line Disease Prevention
​Poor water quality, lack of dietary variety, and prolonged stress can lead to Head and Lateral Line Erosion (HLLE). Keep water chemistry pristine, run high-quality carbon to eliminate chemical irritants, and enrich their seaweed sheets with vitamin supplements (like Selcon) to keep their electric-blue skin flawless.