Fish Active during the day

Longsnout Boarfish

Pentaceropsis recurvirostris

iNaturalist Wikipedia

With a snout like a straw and a striking suit of racing stripes, the Longsnout Boarfish is one of the most distinctive residents of Australia's southern reefs. This fascinating bottom-dweller is a master of precision feeding in the cool temperate waters of the Great Southern Reef.

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Quick Identification

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Size

Grows up to 60 cm (24 inches) in length; typically weighs between 1.5 and 3 kg (3.3–6.6 lbs).

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Colors

Silvery-white body with three bold, dark brown to black diagonal bands; dorsal and pelvic fins often show yellow or dark highlights.

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Key Features

Extremely elongated, tubular snout
Tall, sharp-spined dorsal fin resembling armor
Three prominent dark diagonal stripes across a compressed body
Small mouth located at the very tip of the snout

When You’ll See Them

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Activity pattern Active during the day

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Peak hours 8 AM - 5 PM

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Season Year-round; sightings often peak in summer during calmer sea conditions.

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Diet A specialized suction feeder that targets polychaete worms, brittle stars, and small crustaceans; it occasionally consumes brown algae while foraging.

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Habitat Temperate marine waters, specifically rocky reefs, seagrass meadows, and the sandy continental shelf.

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Where Does the Longsnout Boarfish Live?

The Longsnout Boarfish is a proud native of the Southern Hemisphere, found exclusively along the temperate southern coast of Australia. Its range stretches from the central coast of New South Wales, around the southern tip of Tasmania, and westward to the southern reaches of Western Australia. As a regional endemic, it is a hallmark species of the Great Southern Reef, thriving in the cool, nutrient-rich waters that define the Australian coastline.

Basemap © OpenStreetMap contributors

1 Countries

1.2M km² Range

Least Concern Conservation

AU Australia

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iNaturalist / Verified observation data

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Behavior

The Longsnout Boarfish is a generally solitary and somewhat shy species that spends much of its time hovering near the sea floor. Unlike many reef fish that dart quickly, the boarfish moves with a slow, methodical grace, using its specialized snout to probe into crevices and soft sediments for food. While they are usually found alone, small groups may occasionally congregate in areas with high food density or during the breeding season.

These fish are not known to be aggressive and often ignore divers or underwater cameras if approached slowly. They are highly specialized for life on temperate reefs, where their striped pattern provides surprisingly effective camouflage against the shadows of kelp forests and rocky overhangs. Because they are not a primary target for commercial fisheries and have low catch rates in trawls, their interactions with humans are primarily limited to recreational diving and underwater photography.

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Camera Tips

Capturing the Longsnout Boarfish requires a waterproof action camera or a dedicated underwater housing. For coastal residents with access to a private jetty or pier in southern Australia, mounting a camera to a weighted tripod or a pier pylon at depths of 5 to 10 meters can yield excellent results. Position the lens to face a mix of sandy bottom and rocky reef edge, as this 'edge habitat' is where they most frequently forage for worms.

Natural light is best for capturing their striking silver and black stripes, so aim for mid-morning or early afternoon when the sun is directly overhead. If you are using a stationary camera, avoid using bright artificial lures; instead, look for areas with high brittle star activity. The boarfish is naturally curious about slow-moving objects but can be easily spooked by sudden vibrations or high-intensity strobes.

Set your camera to a high frame rate (60fps or higher) to capture the subtle movement of their tubular snout as they feed. Because these fish are often found in deeper, darker waters, ensure your camera has a wide aperture or good low-light performance. If you are deploying a camera from a boat or pier, a 'drop cam' setup with a stabilizing fin will help keep the footage steady against coastal currents.

Similar Species

Species that look similar or are commonly confused with Longsnout Boarfish.

Shortboarfish

Much shorter snout and a more rounded, less elongated body profile compared to the Longsnout.

Giant Boarfish

Grows significantly larger (up to 90cm) and lacks the sharp diagonal banding seen in the Longsnout Boarfish.

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Frequently Asked Questions

Longsnout Boarfish are diurnal, meaning they are primarily active during daylight hours. They are most frequently observed by divers and cameras between sunrise and sunset while they forage along the sea floor.

You don't need traditional bait for these fish. Instead, place your camera near natural features like rocky overhangs or at the boundary where a reef meets the sand, which are their preferred foraging grounds for worms and brittle stars.

They are carnivores with a very specific diet, using their long snouts to suck up polychaete worms and brittle stars from narrow crevices and sandy patches. They have also been known to consume small amounts of brown algae.

While you won't find them in a backyard garden, they are quite common in the 'blue backyards' of coastal southern Australia, frequently living near suburban jetties and popular diving reefs in cities like Melbourne, Adelaide, and Hobart.

The Longsnout Boarfish is the only member of its genus and can be distinguished by its exceptionally long, tubular snout and the three distinct dark diagonal bands on its silver body. Other boarfish species typically have shorter snouts or different patterns.

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