Fish Active day and night

Pacific Needlefish

Tylosurus pacificus

iNaturalist

A silver arrow of the Eastern Pacific, the Pacific Needlefish is a master of the surface strike. With its needle-thin beak and incredible leaping ability, it is one of the most specialized predators in coastal waters.

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Quick Identification

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Size

Typically 60-100 cm (24-39 inches) in length; weighs between 1-2.5 kg (2.2-5.5 lbs).

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Colors

Dorsal side is a deep iridescent blue or blue-green, fading to brilliant silver or white on the flanks and belly; fins are generally translucent or slightly dusky.

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Key Features

Extremely elongated, slender body
Beak-like jaws filled with many sharp, needle-like teeth
Dorsal and anal fins positioned far back near the tail
Absence of gill rakers

When You’ll See Them

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Activity pattern Active day and night

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Peak hours 6-9 AM, 5-8 PM

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Season Year-round

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Diet Strictly carnivorous; they use their long, toothy beaks to snatch small schooling fishes like anchovies, sardines, and flying fish.

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Habitat Coastal marine waters, particularly near coral reefs, rocky points, and mangrove estuaries.

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Where Does the Pacific Needlefish Live?

The Pacific Needlefish is a staple of the Eastern Pacific Ocean, thriving in the warm tropical and subtropical waters along the coastline. Its territory extends from the southern reaches of Baja California and the Gulf of California southward through Central America to the coasts of Peru. It is also a common sight around major oceanic island chains including the Galapagos, Cocos, and Revillagigedo Islands.

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10 Countries

4.2M km² Range

Least Concern Conservation

MX Mexico CR Costa Rica PA Panama EC Ecuador CO Colombia

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iNaturalist / Verified observation data

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Behavior

The Pacific Needlefish is a high-speed surface predator designed for life in the upper water column. They are often seen cruising just inches below the surface, where their counter-shaded coloration—dark on top and silver on the bottom—makes them nearly invisible to predators from above and prey from below. They are solitary hunters but may congregate in small, loose groups where baitfish are abundant.

This species is well-known for its 'skittering' behavior, a defensive and hunting maneuver where it leaps out of the water and 'walks' across the surface on its tail. While usually wary of humans, they are famously attracted to artificial lights at night. This can lead to dangerous situations where the fish leap toward the light source at high speeds, occasionally striking boaters or fishers.

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Camera Tips

Capturing the Pacific Needlefish requires an underwater camera setup specifically rigged for surface monitoring. Because these fish live almost exclusively in the top few feet of water, mount your camera in a waterproof housing roughly 30-60 cm below the surface. Aim the lens horizontally along the shoreline or slightly upward to capture the silver flash of their bodies against the sun. Pier pilings and boat docks are excellent mounting points, as needlefish often patrol these structures looking for baitfish.

Lighting is the most critical factor for a clear shot. During the day, position your camera so the sun is behind it; this prevents the bright surface glare from washing out the image and highlights the blue-green iridescence of the fish's back. In the early morning or late afternoon, the horizontal light creates a beautiful 'shimmer' effect on their scales. Use a high shutter speed (1/500 or faster) if your camera allows, as these fish move with sudden, jerky bursts of speed that can easily cause motion blur.

To attract Pacific Needlefish to your camera's field of view at night, utilize a submersible green or white LED light. These lights attract zooplankton, which in turn attract the small fish that needlefish prey upon. However, be extremely careful with equipment placement; needlefish are prone to jumping toward lights and can damage cameras or knock them off their mounts. Ensure all cables are tucked away and the housing is securely tethered to a solid structure.

Similar Species

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

Houndfish

Much larger and more muscular, with a deeper body and a distinct lateral keel on the tail stalk.

Flat Needlefish

Features a distinctively compressed, flattened body and dark vertical bars that are absent on the Pacific Needlefish.

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Frequently Asked Questions

They are active around the clock, but you will see the most hunting activity during the crepuscular hours of dawn and dusk when light levels are changing and baitfish are most vulnerable.

The best way to attract them is by using a submerged fishing light at night. This creates a localized food chain that eventually brings needlefish in to hunt. During the day, they are naturally attracted to areas with structure where small fish hide.

They are specialized piscivores, meaning they eat other fish. Their diet consists almost entirely of small, silvery schooling fish which they grab crosswise in their beaks before swallowing.

Yes, they are very common around coastal developments, marinas, and canals throughout their range in the Eastern Pacific, as these areas often harbor the small fish they feed on.

The Pacific Needlefish is generally more slender and lacks the distinct black 'keel' on the tail base that is often found on the larger, more robust Houndfish (Tylosurus crocodilus).

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