Fish Active day and night

Atlantic Needlefish

Strongylura marina

iNaturalist Wikipedia

Meet the silver arrow of the shallows. The Atlantic Needlefish is a sleek, surface-dwelling predator famous for its lightning-fast strikes and unique, beak-like jaws.

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Quick Identification

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Size

30–111 cm (12–44 inches) in length; typically weighs 0.5–2 kg (1–4.5 lbs)

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Colors

Bluish-green or olive back with bright silvery sides and a white belly; often features a dark horizontal stripe along the flank

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Key Features

Extremely elongated, needle-like jaws with sharp teeth
Slender, torpedo-shaped body profile
Dorsal and anal fins positioned far back near the tail
Lower jaw slightly longer than the upper jaw

When You’ll See Them

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Activity pattern Active day and night

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Peak hours Dawn, dusk, and nighttime near light sources

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Season Year-round in tropical areas; May-September in northern ranges

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Diet Carnivorous predator focusing on small fish (like silversides and killifish), shrimp, and other crustaceans near the water's surface.

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Habitat Coastal waters, estuaries, salt marshes, marinas, and occasionally tidal freshwater rivers.

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Where Does the Atlantic Needlefish Live?

The Atlantic Needlefish is native to the western shores of the Atlantic Ocean, spanning a vast latitudinal range from the temperate waters of Maine in the United States down to the tropical coasts of southern Brazil. This species thrives throughout the coastal zones of North, Central, and South America, including the entirety of the Gulf of Mexico and the Caribbean Sea. While primarily a marine inhabitant, they are remarkably adaptable and are frequently found in brackish estuaries and freshwater canals far inland from the coast.

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7 Countries

12.5M km² Range

Least Concern Conservation

US United States BR Brazil MX Mexico Cuba Bahamas VE Venezuela CO Colombia

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iNaturalist / Verified observation data

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Behavior

The Atlantic Needlefish is a specialized surface-dweller, often seen gliding just beneath the water's surface in search of prey. They are solitary or loosely schooling hunters that rely on their incredibly thin profile to remain undetected by smaller fish. When stalking prey, they move slowly and strike with a sudden, sideways snap of their long, tooth-filled beaks. This species is known for its agility and can leap out of the water at high speeds if startled or when pursuing a meal.

In coastal backyard settings, they are frequently spotted around docks, piers, and marinas where the water is relatively still. They are highly attracted to artificial lights at night, which they use to find congregating baitfish. While generally harmless to humans, they can be skittish, and their tendency to jump toward light sources means they should be observed from a respectful distance during night fishing or boating activities.

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Camera Tips

To capture high-quality footage of the Atlantic Needlefish, camera placement is the most critical factor. Because this species spends nearly all its time in the top few inches of the water column, your camera should be mounted just 6 to 12 inches below the surface. If you are filming from a dock or pier, use a floating mount or a fixed bracket that keeps the lens level with the surface tension. Angling the camera slightly upward can capture the dramatic silhouette of the needlefish against the sky or the underside of the water's surface.

Nighttime offers the best opportunity for close-up encounters. These fish are highly phototaxic, meaning they are naturally drawn to light. Installing a submerged green or white LED light near your camera will attract baitfish, which in turn brings the needlefish directly into your frame. To avoid overexposing their highly reflective, silvery scales, place the light source 2-3 feet to the side of the camera rather than directly behind it. This creates a more natural side-lighting effect that highlights their long jaws and slender bodies without washing out the image.

Since needlefish are incredibly fast, use a high frame rate (at least 60fps) to avoid motion blur during their rapid strikes. If you are using a motion-triggered camera, set the sensitivity to high, as their thin profile can sometimes fail to trigger sensors designed for larger mammals. During the summer months, look for areas with overhanging vegetation or mangroves, as needlefish often hover in the shadows of these structures waiting for an ambush opportunity.

Similar Species

Species that look similar or are commonly confused with Atlantic Needlefish.

Houndfish

Much larger (up to 5 feet) with a more robust body and a distinct dark keel on the tail base.

Ballyhoo

Only the lower jaw is elongated; the upper jaw is short and triangular.

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Frequently Asked Questions

They are active day and night, but they are most easily observed at night near dock lights or during the 'golden hours' of dawn and dusk when they hunt baitfish near the surface.

The best way to attract them is by using a submersible fishing light. The light draws in small baitfish and shrimp, which will naturally bring Atlantic Needlefish into the area to feed.

They are strict carnivores, primarily eating small fish like silversides, anchovies, and killifish, as well as small crustaceans that live near the water's surface.

Yes, they are very common in suburban brackish canals and marinas along the Atlantic and Gulf coasts, as they prefer the calm, sheltered waters these areas provide.

While similar, the Atlantic Needlefish is smaller and lacks the distinct black 'keel' or fleshy ridge on the side of the tail base found on the much larger Houndfish.

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