Fish Active at night

Banded Guitarfish

Zapteryx exasperata

iNaturalist Wikipedia

Meet the 'Shark-Ray' of the Pacific. With its flat, guitar-shaped body and striking striped pattern, the Banded Guitarfish is one of the most unique residents of the California coastline.

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0 Habitats

Quick Identification

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Size

Typically 60–90 cm (2–3 ft) in length, weighing up to 2.5 kg (5.5 lbs)

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Colors

Light brown to olive-grey upper body with distinctive dark brown or black transverse bands; white or cream underside

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Key Features

Wedge-shaped snout and flattened disk-like body
Dark, saddle-like bands across the back and tail
Prickly texture due to small dermal denticles
Two large dorsal fins located far back on the tail

When You’ll See Them

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Activity pattern Active at night

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Peak hours 9 PM - 3 AM

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Season Year-round; most visible in shallow water during Summer and Fall

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Diet Carnivorous bottom-feeder; primarily eats small crustaceans like shrimp and crabs, as well as clams and small benthic fishes.

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Habitat Shallow coastal waters, sandy seafloors, rocky reef edges, and kelp forests.

public Geographic range

Where Does the Banded Guitarfish Live?

The Banded Guitarfish is a native resident of the Eastern Pacific Ocean. Its primary range spans from the central coast of California in the United States down through the entire Baja California peninsula and into the Gulf of California toward Mazatlan, Mexico. While it is most abundant in the warm-temperate waters of the Californias, it is a quintessential species of the Pacific continental shelf, rarely venturing into the deep open ocean.

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2 Countries

450K km² Range

Least Concern Conservation

MX Mexico US United States

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iNaturalist / Verified observation data

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Behavior

The Banded Guitarfish is a master of camouflage and a patient hunter. Primarily a bottom-dweller, it spends much of its daylight hours partially buried in sandy or muddy substrates, with only its eyes and spiracles (breathing holes) exposed. This 'ambush' posture allows it to hide from predators while keeping a lookout for unsuspecting prey. Despite their shark-like appearance, they are remarkably docile and tend to remain motionless even when approached by divers, making them excellent subjects for underwater observation.

As nocturnal foragers, they become much more active after sunset. They move with a rhythmic, undulating motion, using their powerful tails more than their pectoral fins for propulsion, which is a trait that highlights their evolutionary link between sharks and rays. They are generally solitary creatures but can be found in higher concentrations in shallow bays during the breeding season. For humans, they pose no threat, as they lack venomous stingers or aggressive tendencies.

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Camera Tips

To capture high-quality footage of a Banded Guitarfish, your camera must be positioned on the seafloor rather than suspended. If you are using a waterproof trail camera or a tethered underwater unit, look for 'edges' where rocky reefs meet sandy plains. These are natural highways for guitarfish as they move between hunting grounds. Aim the lens horizontally, just 5-10 inches off the bottom, to catch their unique low-profile silhouette as they glide by.

Because these fish are most active at night, ensure your camera has a strong infrared (IR) flash or high-quality low-light sensors. They are not easily spooked by artificial light, but a soft red light is often better for capturing natural hunting behavior without overexposing their pale underbellies. If you are in a legal area for it, placing a small perforated canister of mashed sardines or 'chum' just out of frame can encourage a guitarfish to linger in front of the lens while it investigates the scent.

Seasonality plays a big role in camera success. During the late summer months, these fish often move into very shallow water (less than 10 feet deep) to pup or mate. Setting up a camera in sheltered bays or near the mouths of estuaries during this time can yield spectacular results. Always ensure your camera housing is weighted or securely anchored to a fixed object, as surge and bottom currents can easily tumble a lightweight camera across the sand.

Similar Species

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

Shovelnose Guitarfish

Lacks the dark bands and typically grows much larger, up to 5 feet in length.

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Frequently Asked Questions

Banded Guitarfish are primarily nocturnal. They spend their days resting under a thin layer of sand and become active hunters after dark, searching the seafloor for crustaceans.

The best way to attract them is by placing your camera near sandy patches adjacent to kelp forests. Using a scent lure like a mesh bag with crushed shellfish can draw them into the camera's field of view.

Their diet consists of bottom-dwelling invertebrates including shrimp, crabs, and small worms, as well as the occasional small fish found on the seabed.

While not 'suburban' in a terrestrial sense, they are very common in the coastal waters directly adjacent to major cities like San Diego and Ensenada, often found just off public beaches.

The most obvious difference is the pattern; the Banded Guitarfish has dark, saddle-like stripes across its back, while the Shovelnose is generally a uniform sandy brown.

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