Species learning profile
Chirurgien Bleu
Paracanthurus hepatus
Blue tang (Paracanthurus hepatus) is a saltwater fish associated with reef habitat in Pacific. Its sharp tail spine inspired its family name.
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At a glance
- Eau
- Eau salée
- Habitat
- Récif
- Longueur maximale
- 31 cm
- Répartition
- Pacifique
- Famille
- Acanthuridae
- Ordre
- Acanthuriformes
Observe
How to identify Chirurgien Bleu
- Vivid blue with a yellow tail.
- Flat and oval, with a sharp-looking tail spine.
- Reported maximum length: 31 cm — up to about the length of a guitar. Maximum is not the same as typical adult size.
Field note: color, size, and markings can change with age, sex, season, depth, and lighting. Use several traits together.
Place and pattern
Where it lives—and how it behaves
Habitat and range
This species is associated with reef habitat across Pacific. Reef crevices provide shelter while current, coral, algae, and neighboring animals supply food.
Behavior
Uses reef habitat for feeding, shelter, migration, or reproduction.
Food-web connections
What it eats and why it matters
Diet
Mostly algae scraped or picked from hard surfaces.
Ecological role
Its feeding helps shape the balance among algae, coral, invertebrates, and other reef fish..
Remember
One fact worth keeping
Chirurgien Bleu peut atteindre environ 31 cm et vit souvent près de Récif.
Think like a conservationist
A conservation lens
Reef fish are affected by coral loss, warming, destructive fishing, pollution, and the removal of key grazers or predators.
This habitat lens is not a current population-status assessment. Status can differ among regions and change as new assessments are published; follow the reference links and local fisheries or wildlife agencies for current decisions.
Recall
Quick knowledge check
Which habitat is most closely associated with Blue tang in this guide?
Keep exploring
References and further reading
Fishdle summarizes stable identification and ecology concepts in plain language. Taxonomy and population knowledge continue to change, so use primary assessments and regional authorities for conservation or management decisions.
Make connections