Fish Active during the day

Striped Mullet

Chelon tricuspidens

iNaturalist Wikipedia

An iconic resident of South Africa's muddy estuaries, the Striped Mullet is a silver-scaled acrobat known for its social schooling and impressive leaps. Watch them graze the coastal shallows where river meets sea.

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Quick Identification

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Size

Typically 40-60 cm (16-24 inches), reaching a maximum of 75 cm (30 inches); weight ranges from 1-4 kg (2.2-8.8 lbs).

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Colors

Silvery-grey body with a darker olive-green or blue-grey back; 7 to 8 distinct dark horizontal stripes along the sides; silver-white belly.

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Key Features

7-8 dark longitudinal stripes along the flanks
Distinctive tricuspid (three-pointed) teeth used for grazing
Broad, flattened head with a small, terminal mouth
Deeply forked tail fin for powerful swimming

When You’ll See Them

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Activity pattern Active during the day

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Peak hours 9 AM - 4 PM, specifically during high tide cycles

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Season Year-round

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Diet A specialized detritivore and herbivore, feeding on organic matter filtered from mud, as well as filamentous algae and diatoms.

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Habitat Muddy estuaries, coastal lagoons, and shallow river mouths with high nutrient content.

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Where Does the Striped Mullet Live?

Native to the southeastern coast of Africa, the Striped Mullet is a regional specialist found almost exclusively along the South African coastline. Its core range extends from Mossel Bay in the Western Cape eastward to the Kosi Estuary in KwaZulu-Natal. It is a strictly coastal and estuarine inhabitant, thriving in the subtropical waters where river systems meet the Indian Ocean.

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1 Countries

45K km² Range

Least Concern Conservation

ZA South Africa

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iNaturalist / Verified observation data

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Behavior

The Striped Mullet is a highly social species, typically found in large schools that move rhythmically through estuarine waters. They are primarily bottom-feeders, often seen tilting their bodies at an angle to scrape algae and organic detritus from the muddy floor. This species is known for its remarkable agility and is frequently observed jumping out of the water, a behavior thought to help clear their gills or escape predators.

In South African estuaries, they serve as a vital link in the food chain. While they are generally wary of humans, they can become accustomed to activity in busy waterways. They are most active during the day, particularly during rising tides when they move into shallower mudflats to feed on newly submerged nutrients.

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Camera Tips

To capture the Striped Mullet on camera, you will need a waterproof action camera or an underwater housing. For the best results in their natural habitat, mount your camera on a weighted base or a short, heavy tripod and place it directly on the muddy floor of a shallow estuary during low tide. As the tide comes in, the school will move over the camera to feed. Position the lens at a slight upward angle to capture the silvery reflections of their scales against the sunlight filtering through the surface.

Visibility is the biggest challenge in muddy estuaries. To get the clearest footage, wait for a period of calm weather when the sediment has settled, or aim to film during "slack water"—the brief window when the tide is neither coming in nor going out. Avoid placing the camera near heavy current, as this will stir up silt and obscure your view. If the water is particularly murky, keep the camera very close (within 30 cm) to your bait or point of interest.

You can encourage a school to congregate in front of your lens by using a small mesh bag filled with "chum," such as a mixture of breadcrumbs, flour, and a dash of fish oil. Secure the bag to a stake in the mud just out of the frame. The mullet will be drawn to the scent and the cloud of particles, providing excellent close-up opportunities of their unique feeding mechanics and tricuspid teeth.

Setting your camera to a high frame rate (60fps or 120fps) is highly recommended. These fish move with sudden, jerky bursts of speed, and high-speed recording will allow you to watch their social interactions and jumping behavior in smooth slow motion. Early morning or late afternoon sun provides the best horizontal light to illuminate the dark stripes along their silver bodies.

Similar Species

Species that look similar or are commonly confused with Striped Mullet.

Grooved Mullet

Features a prominent groove on the upper lip and typically lacks the intense horizontal striping found on the Striped Mullet.

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Frequently Asked Questions

Striped Mullet are primarily diurnal, meaning they are most active during daylight hours. Their activity is heavily influenced by the tides; they are most likely to be seen feeding in shallows during the rising tide.

You can attract them using a scent trail. A mesh bag filled with breadcrumbs or dough mixed with sardine oil works well. Place the bait in shallow, muddy water where the tide is moving to help carry the scent.

They are bottom-feeders that primarily eat detritus (decaying organic matter) and algae. They use their specialized three-pointed teeth to scrape food off rocks and the muddy substrate.

They are very common in suburban areas that border estuaries or coastal lagoons in South Africa. They are often spotted from piers, bridges, and garden boardwalks overlooking tidal rivers.

The Chelon tricuspidens is best identified by its 7-8 dark longitudinal stripes and its specific teeth. Unlike the common Flathead Mullet, which has a very broad head, the Striped Mullet has a more streamlined profile and is restricted to the South African coast.

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