Species learning profile
Bluefin trevally
Caranx melampygus
Bluefin trevally (Caranx melampygus) is a saltwater fish associated with reef habitat in Indo-Pacific. Electric-blue fins and spots brighten as it hunts.
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At a glance
- Eau
- Eau salée
- Habitat
- Récif
- Longueur maximale
- 117 cm
- Répartition
- Indo-Pacifique
- Famille
- Carangidae
- Ordre
- Carangiformes
Observe
How to identify Bluefin trevally
- Electric-blue fins and spots brighten as it hunts.
- Guide context: reef habitat in Indo-Pacific.
- Reported maximum length: 117 cm — capable of growing longer than many people are tall. 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 Indo-Pacific. Reef crevices provide shelter while current, coral, algae, and neighboring animals supply food.
Behavior
Rushes prey over reef flats by day
Food-web connections
What it eats and why it matters
Diet
Fish and crustaceans.
Ecological role
A fast, high-level reef predator.
Remember
One fact worth keeping
Bluefin trevally peut atteindre environ 117 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 Bluefin trevally 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