Fish Active day and night

Lesser Guitarfish

Acroteriobatus annulatus

iNaturalist Wikipedia

Meet the 'Sandshark' that isn't a shark at all—the Lesser Guitarfish is a beautifully patterned ray that glides through the Southern African surf like a ghost on the seafloor.

0 Sightings

0 Habitats

Quick Identification

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Size

Typically 60–100 cm (2–3.3 ft), reaching a maximum of 140 cm (4.6 ft); weight up to 15 kg (33 lbs)

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Colors

Sandy brown to greyish-yellow dorsal surface covered in numerous small, dark-edged rings or spots; white underside

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Key Features

Flattened, disc-shaped forebody with a thick, shark-like tail
Pointed, wedge-shaped snout
Distinctive dark 'ocelli' or ring-like markings across the back
Two large dorsal fins located far back near the tail

When You’ll See Them

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Activity pattern Active day and night

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Peak hours Most active during rising tides and dawn/dusk

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Season October to March (Summer months in the Southern Hemisphere)

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Diet A benthic predator that feeds on small crustaceans (crabs and shrimp), mollusks, and polychaete worms using its pavement-like teeth to crush shells.

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Habitat Shallow coastal waters, sandy beaches, estuaries, and lagoons, usually in depths of less than 50 meters.

public Geographic range

Where Does the Lesser Guitarfish Live?

The Lesser Guitarfish is a native resident of the coastal waters of Southern Africa. Its core range extends from central Namibia around the Cape of Good Hope to central KwaZulu-Natal in South Africa. While it is a staple of the Atlantic and Indian Ocean shorelines in this region, it is most commonly encountered in the warm-temperate waters of the Eastern and Western Cape provinces, where it thrives in the sandy-bottomed bays.

Basemap © OpenStreetMap contributors

2 Countries

320K km² Range

Least Concern Conservation

ZA South Africa

Marginal

NA Namibia

Marginal

eco

iNaturalist / Verified observation data

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Behavior

The Lesser Guitarfish is a master of camouflage, often found partially buried in the sand with only its eyes and spiracles exposed. This bottom-dwelling species is remarkably docile and spends much of its day resting in shallow coastal waters. Despite their shark-like appearance, they are technically a type of ray and are completely harmless to humans, lacking the stinging spine found in many of their cousins.

These fish are most active during the rising tide when they move into the surf zone to forage. While they are often solitary, they can be found in high densities in sheltered bays and estuaries, particularly during the summer breeding season. When threatened or disturbed, they use their powerful tails to provide a quick burst of speed, gliding across the seafloor to a new hiding spot.

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Camera Tips

To capture the Lesser Guitarfish on an AI camera, you will need a waterproof setup or an underwater housing. Because these fish blend perfectly with the sand, placement is everything. Position your camera on a weighted base in shallow, sandy-bottomed gullies or near the mouth of an estuary where the water is relatively clear. Aim the lens horizontally across the seafloor rather than top-down to better capture their profile and the movement of their shark-like tail.

Since these fish are attracted to the scent of prey, using a perforated 'bait jar' filled with crushed crab or sardines secured just in front of the camera can lure them into the frame. This 'chumming' technique is particularly effective in tidal zones. Ensure your camera is set to a high frame rate, as their movements can be deceptively fast when they decide to strike at bait or move off-screen.

Lighting is a major challenge in coastal waters. The best footage is usually captured during the mid-morning or early afternoon when the sun is directly overhead, penetrating the shallow water and revealing the intricate ring patterns on the fish's back. If you are using an AI-powered system, train it to recognize the triangular shape of the snout, which is often the first part of the fish to emerge from the sand.

Similar Species

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

Giant Guitarfish

Much larger (up to 3m) with a more pointed snout and dark spots rather than rings.

Greyspot Guitarfish

Features small white or grey spots and is typically found in deeper, more tropical waters.

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Frequently Asked Questions

Lesser Guitarfish are active throughout the day and night, but their movement is heavily influenced by the tides. They are most frequently seen moving into shallow water to feed during the incoming high tide, often during the low-light hours of dawn and dusk.

You can attract them by placing a camera in a shallow sandy area and using a mesh bag or perforated container filled with crushed crustaceans or fish scraps. The scent will draw them in as they scavenge the seafloor.

Their diet consists mainly of bottom-dwelling invertebrates. They use their specialized mouths to crush the shells of crabs, small clams, and shrimp found in the sand.

They are very common along the coastlines of popular South African beach towns. If you live near a sandy beach or estuary in the Western or Eastern Cape, they are likely just a few meters offshore.

Look for the 'ocelli'—the small dark rings on their back. Unlike the Giant Guitarfish, which is much larger and has spots, the Lesser Guitarfish remains small and is covered in these distinct circular markings.

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