Blue Hippo Tang Care Guide
Paracanthurus hepatus · Saltwater Tang

What Blue Hippo Tang look like
The Blue Hippo Tang, scientifically known as Paracanthurus hepatus, exhibits a strikingly vibrant coloration characterized by a deep blue body adorned with a prominent yellow tail and a distinctive black 'palette' pattern on its side. This species can attain a maximum adult size of approximately 12 inches (30 cm) in length. Sexual dimorphism is minimal, with males and females being visually indistinguishable; however, males may exhibit slightly larger dorsal fins. A notable defensive adaptation is the presence of sharp, retractable spines located on either side of the tail, which can inflict painful wounds on potential predators. The species also features a laterally compressed body, allowing for agile swimming in tight coral environments, and a well-developed dorsal fin that aids in maneuverability.
Behavior & temperament
The Blue Hippo Tang is known for its active and social behavior, often found in small groups within its natural habitat. It typically occupies the mid to upper levels of the reef, where it grazes on algae and detritus. During breeding, males will engage in elaborate courtship displays, which may include swimming in circles around females and showcasing their vibrant coloration. The species is generally peaceful but can exhibit territorial aggression, particularly towards conspecifics or similar-looking species, especially in confined spaces. They are also known to establish a social hierarchy within groups, with dominant individuals asserting control over feeding areas.
Diet & feeding
In the wild, the Blue Hippo Tang primarily feeds on algae, particularly filamentous algae, which it grazes from the substrate and coral surfaces. In captivity, it requires a diet rich in marine algae, high-quality herbivore pellets, and occasional vegetable matter such as blanched spinach or nori.
Behind the name
The genus name 'Paracanthurus' is derived from the Greek words 'para' meaning 'beside' and 'kanthos' meaning 'thorn,' referring to the spines on the tail. The species name 'hepatus' comes from the Latin word for 'liver,' possibly alluding to the fish's shape or coloration.
Plan your tank
Check the numbers before you buy: tank volume, salinity, salt mix, water changes, and your ongoing care routine.
Keeping Blue Hippo Tang?
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