Nature Field Guide
Bluefin Trevally
- Spanish name
- Jurel aleta azul
- Scientific name
- Caranx melampygus
What Do Pico & Tati Think?
Pico: “Those blue fins really stand out!”
Tati: “The tiny blue-black spots are another clue in adults.”
Species overview
About the Bluefin Trevally
Adults have blue fins and a brassy upper body dotted with blue-black spots. The deeply forked tail and long side fins give this jack a streamlined profile.
It hunts fish and crustaceans near reefs, alone or in small groups. Young fish differ in color and can use estuarine habitats. Follow its outline as well as its bright markings.
Identification
Key Features of the Bluefin Trevally
Electric blue fins
Blue-black body spots in adults
Deeply forked tail
Habitat & range
Pacific rocky reefs and nearby coastal marine habitats. Check the linked species reference for its wider range.
Local observations
Recorded at Cabo Blanco.
When to observe
Visibility depends on water clarity, currents, depth and conditions. No fixed local viewing or migration season is assigned.
Conservation & care
Observe with a qualified guide. Do not feed, chase or handle fish. Keep fins off the reef and take all litter home.
Threats & pressures
Habitat damage and degraded water quality are pressures to prevent in coastal fish habitats. This profile does not quantify a local decline.
Observation activity
Compare the tail of this trevally with a rounded grouper tail. What shapes do you notice?
Explore by location
Puntarenas & the Gulf Islands · South Pacific · Ocean & Coastal Life