Fish diurnal

Lesser Amberjack

Seriola fasciata

A sleek and spirited hunter of the reef, the Lesser Amberjack is a master of the underwater ambush. Recognizable by its dark 'eyebrow' and silver flash, this curious fish is a prize find for any coastal camera setup.

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Quick Identification

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Size

Typically 30-50 cm (12-20 inches), weighing 2-5 lbs (0.9-2.3 kg); maximum length of 67.5 cm (26.6 inches).

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Colors

Olive-green to brownish-purple back with silvery-white sides and belly; features a distinctive dark 'eyebrow' stripe from the eye to the dorsal fin.

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Key Features

Deep, compressed body profile
Dark olive-brown band running through the eye to the front of the dorsal fin
19-20 soft rays in the second dorsal fin
Large, curious eyes and a slightly protruding lower jaw

When You’ll See Them

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Activity pattern diurnal

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Peak hours 7-10 AM and 3-6 PM

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Season Year-round, with increased sightings in summer and early autumn

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Diet Carnivorous predator feeding on small fish, squid, and benthic crustaceans using a high-speed ambush strategy.

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Habitat Coastal marine environments, typically near the bottom at depths of 35 to 200 meters, but often visiting shallower reefs and piers.

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Behavior

The Lesser Amberjack is a spirited, predatory fish known for its agility and schooling behavior. Unlike some of its larger relatives that wander into the deep open ocean, the Lesser Amberjack is frequently found hovering near the seafloor or around structure-rich environments like reefs, shipwrecks, and rock outcroppings. They are highly social, especially as juveniles, often forming small, fast-moving groups to hunt and provide protection from larger predators.

When it comes to human interaction, these fish are notably curious. Divers and underwater camera users often find them approaching to investigate new objects in their environment. They are opportunistic hunters that rely on speed and sudden bursts of energy to snatch prey. While they are not aggressive toward humans, their rapid movements and sudden appearances can make them a thrilling sight on a stationary underwater rig.

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Camera Tips

Capturing the Lesser Amberjack requires an underwater setup, ideally a drop-camera or a dock-mounted rig. For the best results, mount your camera to a stable piling or a weighted tripod on the seafloor near a reef edge. Because these fish are curious about 'structure,' the presence of the camera itself might attract them, but you should angle the lens slightly downward (about 30 degrees) toward a sandy patch near a reef to catch them as they patrol the bottom for food.

To guarantee a visit, use a mesh chum bag filled with crushed oily fish or frozen squid suspended about three feet in front of the lens. The scent trail will draw them in from a distance. If your camera allows for high frame rates (60fps or higher), use them; the Lesser Amberjack is incredibly fast, and standard frame rates might result in a silver blur rather than a crisp image of their distinctive 'eyebrow' stripe.

Lighting is crucial for marine photography. If you are filming at depths below 20 feet, the red spectrum of light is lost, making the fish look grey. Use a warm-toned underwater video light to bring out the beautiful olive and purple hues on their backs. For the most natural behavior, set your camera to record in 1-minute bursts triggered by motion, as constant recording may drain batteries quickly in the cooler underwater temperatures.

Similar Species

Species that look similar or are commonly confused with Lesser Amberjack.

Greater Amberjack

Much larger (up to 6 feet) with more soft rays in the dorsal fin and a more elongated body.

Banded Rudderfish

Often has a dark band from the eye to the dorsal fin like the Lesser Amberjack, but juveniles have very distinct vertical body bars.

Almaco Jack

Has a much higher, more falcate (sickle-shaped) second dorsal fin than the Lesser Amberjack.

Frequently Asked Questions

Lesser Amberjack are primarily diurnal, meaning they are most active during daylight hours. They have peak hunting windows in the early morning and late afternoon when light levels are changing, allowing them to ambush prey more effectively.

If your 'backyard' is a saltwater dock or pier, you can attract them by creating a mini-reef environment using submerged lights at night or chumming the water with squid or small baitfish during the day to encourage them to stay in the area.

They are strictly carnivorous. Their diet consists of small fish, squids, and various crustaceans like crabs and shrimp that live near the ocean floor.

They are only found in suburban areas that have direct access to deep coastal saltwater, such as properties with ocean-facing docks or those near coral and rocky reef systems along the Atlantic coast.

The Lesser Amberjack is smaller and has a deeper body relative to its length. The most reliable way to distinguish them is by counting the soft rays in the second dorsal fin (19-20 for Lesser vs. 29-34 for Greater) and noting the 'eyebrow' stripe, which is darker and more defined in the Lesser Amberjack.

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