Nature Field Guide
Bigeye Trevally
- Spanish name
- Jurel ojón
- Scientific name
- Caranx sexfasciatus
What Do Pico & Tati Think?
Pico: “Its eye looks extra big!”
Tati: “Check the small dark gill-cover spot too.”
Species overview
About the Bigeye Trevally
A blue-green back fades into silver below. Look for the large eye, a dark mark high on the gill cover and a pale tip on the dark front lobe of the second dorsal fin.
Groups may gather near reef edges during the day. Feeding often takes place at night. Its schooling behavior is interesting, but one fish's markings still matter for identification.
Identification
Key Features of the Bigeye Trevally
Large dark eye
Small dark upper gill-cover spot
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
Find the eye, gill-cover mark and dorsal-fin tip in a clear photograph.
Explore by location
Puntarenas & the Gulf Islands · South Pacific · Ocean & Coastal Life