Blue Tangナンヨウハギ

Paracanthurus hepatusLC— Least Concern

The blue tang, also called the palette surgeonfish, is a vivid royal-blue reef fish with a yellow tail and a distinctive black "palette" marking, found across the tropical Indo-Pacific from East Africa to the Great Barrier Reef. It feeds on zooplankton and algae, defends itself with a sharp spine near its tail, and became world-famous as the character Dory in Disney/Pixar's Finding Nemo and Finding Dory.

Blue Tang (reference photo)
Photo: Tewy / CC BY 2.5 / Source / cropped

Species Data

Classification
Acanthuriformes / Acanthuridae Source
Size
Total length about 20 cm, reaching 30 cm in large individuals
Weight
About 600 g as an adult
Lifespan
Said to be about 15 years in captivity
Diet
Omnivore Omnivorous; in the wild it feeds mainly on zooplankton but also grazes algae, and in captivity it eats krill and leafy vegetables
Distribution
Widely distributed across the tropical Indo-Pacific, from East Africa to northern Australia and Kiribati, including the Philippines, Indonesia, Japan, and the Great Barrier Reef. Source

Did You Know?

  • It hides a sharp spine near the base of its tail and, when fighting, flicks the spine outward and slashes its body sideways at rivals. Source
  • Its body color shifts with its condition, appearing vivid blue when healthy but paling to a whitish hue when sleeping or unwell; at night it wedges itself into a crevice and lies down to sleep. Source
  • It ranks as the 8th most traded aquarium species worldwide, with about 95,000 individuals imported in 2011 alone; captive breeding was long considered difficult until biologist Kevin Barden achieved it for the first time in 2016 after a six-year effort. Source

Where to See This Species

Operating facilities registered on this site: Japan 3

Aquamarine FukushimaFukushimaOpened in 2000

Source

Osaka Aquarium KaiyukanOsakaOpened in 1990

Source

Nagasakipengin SuizokukanNagasakiOpened in 2001

Source

Conservation Story

Conservation Status

Least Concern (LC)

Sources

ja.wikipedia.org en.wikipedia.org

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FAQ

Why is the blue tang also known as Dory?
The species was the inspiration for the character Dory in Disney/Pixar's Finding Nemo and Finding Dory, which brought it worldwide recognition even though it was already among the most popular aquarium fish before the films. Source
How does the blue tang defend itself?
It has a sharp, scalpel-like spine hidden near the base of its tail, which it flicks outward and slashes sideways at rivals or threats. Source
How many operating facilities are registered here?
Operating facilities registered on this site: Japan 3 Source

Books & gear

Source: ja.wikipedia.org en.wikipedia.org